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-rw-r--r--src/string/memccpy.c72
-rw-r--r--src/string/memcpy.c54
-rw-r--r--src/string/memmove.c60
-rw-r--r--src/string/memset.c38
-rw-r--r--src/string/strcat.c61
-rw-r--r--src/string/strcpy.c219
-rw-r--r--src/string/strdup.c79
-rw-r--r--src/string/strmove.c223
-rw-r--r--src/wchar/wcscat.c61
-rw-r--r--src/wchar/wcscpy.c223
-rw-r--r--src/wchar/wcsdup.c82
-rw-r--r--src/wchar/wcsmove.c225
-rw-r--r--src/wchar/wmemccpy.c74
-rw-r--r--src/wchar/wmemcpy.c53
-rw-r--r--src/wchar/wmemmove.c60
-rw-r--r--src/wchar/wmemset.c37
16 files changed, 1621 insertions, 0 deletions
diff --git a/src/string/memccpy.c b/src/string/memccpy.c
new file mode 100644
index 0000000..85378d9
--- /dev/null
+++ b/src/string/memccpy.c
@@ -0,0 +1,72 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * but stop if a specific byte is encountered.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The byte to stop at if encountered.
+ * @param size The maximum number of bytes to copy.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the possition of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written character.
+ */
+void* memccpy(void* restrict whither, const void* restrict whence, int c, size_t size)
+{
+ char_t* stop = memchr(whence, c, size);
+ void* r = NULL
+ if (stop != NULL)
+ size = (size_t)(stop - whence), r = whither + size;
+ memcpy(whither, whence, size);
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * but stop if a specific byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The byte to stop at if encountered.
+ * @param size The maximum number of bytes to copy.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the possition of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written character.
+ */
+void* memcmove(void* whither, const void* whence, int c, size_t size)
+{
+ char_t* stop = memchr(whence, c, size);
+ void* r = NULL
+ if (stop != NULL)
+ size = (size_t)(stop - whence), r = whither + size;
+ memmove(whither, whence, size);
+ return r;
+}
+
diff --git a/src/string/memcpy.c b/src/string/memcpy.c
new file mode 100644
index 0000000..4582544
--- /dev/null
+++ b/src/string/memcpy.c
@@ -0,0 +1,54 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param size The number of bytes to copy.
+ * @return `whither` is returned.
+ */
+void* memcpy(void* restrict whither, const void* restrict whence, size_t size)
+{
+ /* TODO improve implementation of memcpy */
+ void* r = whither;
+ while (size--)
+ *whither++ = *whence++;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment.
+ *
+ * This is a GNU extension.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param size The number of bytes to copy.
+ * @return `whither + size` is returned.
+ */
+void* mempcpy(void* restrict whither, const void* restrict whence, size_t size)
+{
+ return (char*)memcpy(whither, whence, size) + size;
+}
+
diff --git a/src/string/memmove.c b/src/string/memmove.c
new file mode 100644
index 0000000..c721609
--- /dev/null
+++ b/src/string/memmove.c
@@ -0,0 +1,60 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param size The number of bytes to copy.
+ * @return `whither` is returned.
+ */
+void* memmove(void* whither, const void* whence, size_t size)
+{
+ /* TODO improve implementation of memcpy */
+ char* d = whither;
+ const char* s = whence;
+ if ((size_t)(d - s) < size)
+ while (size--)
+ d[size] = s[size];
+ else
+ while (size--)
+ *d++ = *s++;
+ return whither;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param size The number of bytes to copy.
+ * @return `whither + size` is returned.
+ */
+void* mempmove(void* whither, const void* whence, size_t size)
+{
+ return (char*)memmove(whither, whence, size) + size;
+}
+
diff --git a/src/string/memset.c b/src/string/memset.c
new file mode 100644
index 0000000..c0b87a3
--- /dev/null
+++ b/src/string/memset.c
@@ -0,0 +1,38 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+
+
+
+/**
+ * Override a memory segment with a repeated character.
+ *
+ * @param segment The beginning of the memory segment.
+ * @param c The character (8 bits wide.)
+ * @param size The size of the memory segment.
+ * @return `segment` is returned.
+ */
+void* memset(void* segment, int c, size_t size)
+{
+ /* TODO improve implementation of memset */
+ char* s = segment;
+ while (size--)
+ *s++ = c;
+ return segment;
+}
+
diff --git a/src/string/strcat.c b/src/string/strcat.c
new file mode 100644
index 0000000..4fff095
--- /dev/null
+++ b/src/string/strcat.c
@@ -0,0 +1,61 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+#include <stddef.h>
+
+
+
+/**
+ * Concatenate a string to the end of another string.
+ * The resulting strings must not overlap with the appended string.
+ *
+ * The use of this function is often a bad idea.
+ *
+ * @param whither The string to extend.
+ * @param whence The string to append.
+ * @return `whither` is returned.
+ */
+char* strcat(char* restrict whither, const char* restrict whence)
+{
+ strcpy(whither + strlen(whither), whence);
+ return whither;
+}
+
+
+/**
+ * Concatenate a string to the end of another string.
+ * The resulting strings must not overlap with the appended string.
+ *
+ * The use of this function is often a really bad idea.
+ *
+ * @param whither The string to extend.
+ * @param whence The string to append.
+ * @param maxlen The maximum number of bytes to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @return `whither` is returned.
+ */
+char* strncat(char* restrict whither, const char* restrict whence, size_t maxlen)
+{
+ strncpy(whither + strlen(whither), whence, laxmen);
+ return whither;
+}
+
diff --git a/src/string/strcpy.c b/src/string/strcpy.c
new file mode 100644
index 0000000..dfbdc75
--- /dev/null
+++ b/src/string/strcpy.c
@@ -0,0 +1,219 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+#include <stddef.h>
+
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL byte is encountered.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @return `whither` is returned.
+ */
+char* strcpy(char* restrict whither, const char* restrict whence)
+{
+ return memcpy(whither, whence, strlen(whence) + 1);
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL byte is encountered.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @return `whither + strlen(whence)` is returned.
+ */
+char* stpcpy(char* restrict whither, const char* restrict whence)
+{
+ return mempcpy(whither, whence, strlen(whence) + 1) - 1;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL byte or a specified byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The stop byte.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the position of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+char* strccpy(char* restrict whither, const char* restrict whence, int c)
+{
+ char* r = memccpy(whither, whence, c, strlen(whence) + 1);
+ if (r)
+ *r = 0;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL byte or a specified substring is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param str The substring, ignored if `NULL`.
+ * @return `NULL` if `str` was not encountered, otherwise
+ * the position of `str` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+char* strstrcpy(char* restrict whither, const char* restrict whence, const char* restrict str)
+{
+ const char* stop = str == NULL ? NULL : strstr(whence, str);
+ size_t n = stop == NULL ? strlen(whence) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL ? whither + n;
+ memcpy(whither, whence, n);
+ whither[n] = 0;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL byte is encountered.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param maxlen The maximum number of bytes to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @return `whither` is returned.
+ */
+char* strncpy(char* restrict whither, const char* restrict whence, size_t maxlen)
+{
+ size_t n = strnlen(whence, maxlen);
+ memcpy(whither, whence, n);
+ memset(whither, 0, maxlen - n);
+ return whither;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL byte is encountered.
+ *
+ * This is a GNU extension.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param maxlen The maximum number of bytes to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @return `whither` plus the number of written bytes,
+ * excluding NUL bytes, is returned.
+ */
+char* stpncpy(char* restrict whither, const char* restrict whence, size_t maxlen)
+{
+ size_t n = strnlen(whence, maxlen);
+ memcpy(whither, whence, n);
+ memset(whither, 0, maxlen - n);
+ return whither + n;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL byte or a specified byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The stop byte.
+ * @param maxlen The maximum number of bytes to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the position of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+char* strcncpy(char* restrict whither, const char* restrict whence, int c, size_t maxlen)
+{
+ const char* stop = memchr(whence, c, maxlen);
+ size_t n = stop == NULL ? strnlen(whence, maxlen) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL : (whither + n);
+ memcpy(whither, whence, n);
+ memset(whither, 0, maxlen - n);
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL byte or a specified substring is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param str The substring, ignored if `NULL`.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @param maxlen The maximum number of bytes to copy.
+ * @return `NULL` if `str` was not encountered, otherwise
+ * the position of `str` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+char* strstrncpy(char* restrict whither, const char* restrict whence,
+ const char* restrict str, size_t maxlen)
+{
+ const char* stop = strnstr(whence, str, maxlen);
+ size_t n = stop == NULL ? strnlen(whence, maxlen) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL : (whither + n);
+ memcpy(whither, whence, n);
+ memset(whither, 0, maxlen - n);
+ return r;
+}
+
diff --git a/src/string/strdup.c b/src/string/strdup.c
new file mode 100644
index 0000000..27783b9
--- /dev/null
+++ b/src/string/strdup.c
@@ -0,0 +1,79 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+#include <stddef.h>
+
+
+
+/**
+ * Duplicate a string.
+ *
+ * @param string The string to duplicate.
+ * @return The new string. `NULL` is returned on error
+ * and `errno` is set to indicate the error.
+ *
+ * @throws ENOMEM The process could not allocate sufficient amount of memory.
+ */
+char* strdup(const char* string)
+{
+ size_t n = strlen(string) + 1;
+ char* r = malloc(n * sizeof(char));
+ return r == NULL ? NULL : memcpy(r, string, n);
+}
+
+
+/**
+ * Duplicate a string.
+ *
+ * This is a GNU extension.
+ *
+ * @param string The string to duplicate.
+ * @param maxlen Truncate the string to this length, if it is longer.
+ * A NUL byte is guaranteed to always be written
+ * upon successful completion.
+ * @return The new string. `NULL` is returned on error
+ * and `errno` is set to indicate the error.
+ *
+ * @throws ENOMEM The process could not allocate sufficient amount of memory.
+ */
+char* strndup(const char* string, size_t maxlen)
+{
+ size_t n = strnlen(string, maxlen) + 1;
+ char* r = malloc(n * sizeof(char));
+ return r == NULL ? NULL : memcpy(r, string, n);
+}
+
+
+/**
+ * Duplicate a memory segment.
+ *
+ * This is a slibc extension.
+ *
+ * @param segment The memory segment to duplicate.
+ * @param size The size of the memory segment.
+ * @return The new segment. `NULL` is returned on error
+ * and `errno` is set to indicate the error.
+ *
+ * @throws ENOMEM The process could not allocate sufficient amount of memory.
+ */
+void* memdup(const void* segment, size_t size)
+{
+ wchar_t* r = malloc(size * sizeof(wchar_t));
+ return r == NULL ? NULL : memcpy(r, segment, size);
+}
+
diff --git a/src/string/strmove.c b/src/string/strmove.c
new file mode 100644
index 0000000..86298cf
--- /dev/null
+++ b/src/string/strmove.c
@@ -0,0 +1,223 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <string.h>
+#include <stddef.h>
+
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @return `whither` is returned.
+ */
+char* strmove(char* whither, const char* whence)
+{
+ return memmove(whither, whence, strlen(whence) + 1);
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @return `whither + strlen(whence)` is returned.
+ */
+char* stpmove(char* whither, const char* whence)
+{
+ return mempmove(whither, whence, strlen(whence) + 1) - 1;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL byte or a specified byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The stop byte.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the position of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+char* strcmove(char* whither, const char* whence, int c)
+{
+ char* r = memcmove(whither, whence, c, strlen(whence) + 1);
+ if (r)
+ *r = 0;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL byte or a specified substring is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param str The substring, ignored if `NULL`.
+ * @return `NULL` if `str` was not encountered, otherwise
+ * the position of `str` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+char* strstrmove(char* whither, const char* whence, const char* restrict str)
+{
+ const char* stop = str == NULL ? NULL : strstr(whence, str);
+ size_t n = stop == NULL ? strlen(whence) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL ? whither + n;
+ memmove(whither, whence, n);
+ whither[n] = 0;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL byte is encountered.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param maxlen The maximum number of bytes to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @return `whither` is returned.
+ */
+char* strnmove(char* whither, const char* whence, size_t maxlen)
+{
+ size_t n = strnlen(whence, maxlen);
+ memmove(whither, whence, n);
+ memset(whither, 0, maxlen - n);
+ return whither;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param maxlen The maximum number of bytes to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @return `whither` plus the number of written bytes,
+ * excluding NUL bytes, is returned.
+ */
+char* stpnmove(char* whither, const char* whence, size_t maxlen)
+{
+ size_t n = strnlen(whence, maxlen);
+ memmove(whither, whence, n);
+ memset(whither, 0, maxlen - n);
+ return whither + n;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL byte or a specified byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The stop byte.
+ * @param maxlen The maximum number of bytes to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the position of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+char* strcnmove(char* whither, const char* whence, int c, size_t maxlen)
+{
+ const char* stop = memchr(whence, c, maxlen);
+ size_t n = stop == NULL ? strnlen(whence, maxlen) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL : (whither + n);
+ memmove(whither, whence, n);
+ memset(whither, 0, maxlen - n);
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL byte or a specified substring is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param str The substring, ignored if `NULL`.
+ * NOTE that if the resulting string at least this
+ * long, no NUL byte will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL bytes
+ * until this amount of bytes have been written.
+ * @param maxlen The maximum number of bytes to copy.
+ * @return `NULL` if `str` was not encountered, otherwise
+ * the position of `str` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+char* strstrnmove(char* whither, const char* whence, const char* restrict str, size_t maxlen)
+{
+ const char* stop = strnstr(whence, str, maxlen);
+ size_t n = stop == NULL ? strnlen(whence, maxlen) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL : (whither + n);
+ memmove(whither, whence, n);
+ memset(whither, 0, maxlen - n);
+ return r;
+}
+
diff --git a/src/wchar/wcscat.c b/src/wchar/wcscat.c
new file mode 100644
index 0000000..c7b1c5e
--- /dev/null
+++ b/src/wchar/wcscat.c
@@ -0,0 +1,61 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <wchar.h>
+#include <stddef.h>
+
+
+
+/**
+ * Concatenate a string to the end of another string.
+ * The resulting strings must not overlap with the appended string.
+ *
+ * The use of this function is often a bad idea.
+ *
+ * @param whither The string to extend.
+ * @param whence The string to append.
+ * @return `whither` is returned.
+ */
+wchar_t* wcscat(wchar_t* restrict whither, const wchar_t* restrict whence)
+{
+ wcscpy(whither + wcslen(whither), whence);
+ return whither;
+}
+
+
+/**
+ * Concatenate a string to the end of another string.
+ * The resulting strings must not overlap with the appended string.
+ *
+ * The use of this function is often a really bad idea.
+ *
+ * @param whither The string to extend.
+ * @param whence The string to append.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `whither` is returned.
+ */
+wchar_t* wcsncat(wchar_t* restrict whither, const wchar_t* restrict whence, size_t maxlen)
+{
+ wcsncpy(whither + wcslen(whither), whence, laxmen);
+ return whither;
+}
+
diff --git a/src/wchar/wcscpy.c b/src/wchar/wcscpy.c
new file mode 100644
index 0000000..cc60edc
--- /dev/null
+++ b/src/wchar/wcscpy.c
@@ -0,0 +1,223 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <wchar.h>
+#include <stddef.h>
+
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL wide character is encountered.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @return `whither` is returned.
+ */
+wchar_t* wcscpy(wchar_t* restrict whither, const wchar_t* restrict whence)
+{
+ return wmemcpy(whither, whence, wcslen(whence) + 1);
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL wide character is encountered.
+ *
+ * This is a GNU-compliant slibc extension.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @return `whither + wcslen(whence)` is returned.
+ */
+wchar_t* wcpcpy(wchar_t* restrict whither, const wchar_t* restrict whence)
+{
+ return wmempcpy(whither, whence, wcslen(whence) + 1) - 1;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL wide character or a specified wide character
+ * is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The stop character.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the position of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+wchar_t* wcsccpy(wchar_t* restrict whither, const wchar_t* restrict whence, wchat_t c)
+{
+ wchar_t* r = wmemccopy(whither, whence, c, wcslen(whence) + 1);
+ if (r)
+ *r = 0;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL wide character or a specified substring is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param str The substring, ignored if `NULL`.
+ * @return `NULL` if `str` was not encountered, otherwise
+ * the position of `str` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+wchar_t* wcswcscpy(wchar_t* restrict whither, const wchar_t* restrict whence, const wchar_t* restrict str)
+{
+ const wchar_t* stop = str == NULL ? NULL : wcswcs(whence, str);
+ size_t n = stop == NULL ? wcslen(whence) : (size_t)(stop - whence);
+ wchar_t* r = stop == NULL ? NULL ? whither + n;
+ wmemcpy(whither, whence, n);
+ whither[n] = 0;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL wide character is encountered.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `whither` is returned.
+ */
+wchar_t* wcsncpy(wchar_t* restrict whither, const wchar_t* restrict whence, size_t maxlen)
+{
+ size_t n = wcsnlen(whence, maxlen);
+ wmemcpy(whither, whence, n);
+ wmemset(whither, 0, maxlen - n);
+ return whither;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL wide character is encountered.
+ *
+ * This is a GNU extension.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `whither` plus the number of written characters,
+ * excluding NUL characters, is returned.
+ */
+wchar_t* wcpncpy(wchar_t* restrict whither, const wchar_t* restrict whence, size_t maxlen)
+{
+ size_t n = wcsnlen(whence, maxlen);
+ wmemcpy(whither, whence, n);
+ wmemset(whither, 0, maxlen - n);
+ return whither + n;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL wide character or a specified wide character
+ * is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The stop character.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the position of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+wchar_t* wcscncpy(wchar_t* restrict whither, const wchar_t* restrict whence, wchat_t c, size_t maxlen)
+{
+ const char* stop = wmemchr(whence, c, maxlen);
+ size_t n = stop == NULL ? wcsnlen(whence, maxlen) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL : (whither + n);
+ wmemcpy(whither, whence, n);
+ wmemset(whither, 0, maxlen - n);
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * stop when a NUL wide character or a specified substring is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param str The substring, ignored if `NULL`.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `NULL` if `str` was not encountered, otherwise
+ * the position of `str` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied chartacters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+wchar_t* wcswcsncpy(wchar_t* restrict whither, const wchar_t* restrict whence,
+ const wchar_t* restrict str, size_t maxlen)
+{
+ const char* stop = wcsnwcs(whence, str, maxlen);
+ size_t n = stop == NULL ? wcsnlen(whence, maxlen) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL : (whither + n);
+ wmemcpy(whither, whence, n);
+ wmemset(whither, 0, maxlen - n);
+ return r;
+}
+
diff --git a/src/wchar/wcsdup.c b/src/wchar/wcsdup.c
new file mode 100644
index 0000000..dbbbb4c
--- /dev/null
+++ b/src/wchar/wcsdup.c
@@ -0,0 +1,82 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <wchar.h>
+#include <stddef.h>
+
+
+
+/**
+ * Duplicate a string.
+ *
+ * This is a GNU-compliant slibc extension.
+ *
+ * @param string The string to duplicate.
+ * @return The new string. `NULL` is returned on error
+ * and `errno` is set to indicate the error.
+ *
+ * @throws ENOMEM The process could not allocate sufficient amount of memory.
+ */
+wchar_t* wcsdup(const wchar_t* string)
+{
+ size_t n = wcslen(string) + 1;
+ wchar_t* r = malloc(n * sizeof(char));
+ return r == NULL ? NULL : wmemcpy(r, string, n);
+}
+
+
+/**
+ * Duplicate a string.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param string The string to duplicate.
+ * @param maxlen Truncate the string to this length, if it is longer.
+ * A NUL wide character is guaranteed to always be
+ * written upon successful completion.
+ * @return The new string. `NULL` is returned on error
+ * and `errno` is set to indicate the error.
+ *
+ * @throws ENOMEM The process could not allocate sufficient amount of memory.
+ */
+wchar_t* wcsndup(const wchar_t* string, size_t maxlen)
+{
+ size_t n = wcsnlen(string, maxlen) + 1;
+ wchar_t* r = malloc(n * sizeof(wchar_t));
+ return r == NULL ? NULL : wmemcpy(r, string, n);
+}
+
+
+/**
+ * Duplicate a memory segment.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param segment The memory segment to duplicate.
+ * @param size The size of the memory segment.
+ * @return The new segment. `NULL` is returned on error
+ * and `errno` is set to indicate the error.
+ *
+ * @throws ENOMEM The process could not allocate sufficient amount of memory.
+ */
+wchar_t* wmemdup(const wchar_t* segment, size_t size)
+{
+ wchar_t* r = malloc(size * sizeof(wchar_t));
+ return r == NULL ? NULL : wmemcpy(r, segment, size);
+}
+
diff --git a/src/wchar/wcsmove.c b/src/wchar/wcsmove.c
new file mode 100644
index 0000000..298d0a8
--- /dev/null
+++ b/src/wchar/wcsmove.c
@@ -0,0 +1,225 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <wchar.h>
+#include <stddef.h>
+
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL wide character is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @return `whither` is returned.
+ */
+wchar_t* wcsmove(wchar_t* whither, const wchar_t* whence)
+{
+ return wmemmove(whither, whence, wcslen(whence) + 1);
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL wide character is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @return `whither + wcslen(whence)` is returned.
+ */
+wchar_t* wcpmove(wchar_t* whither, const wchar_t* whence)
+{
+ return wmempmove(whither, whence, wcslen(whence) + 1) - 1;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL wide character or a specified wide character
+ * is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The stop character.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the position of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+wchar_t* wcscmove(wchar_t* whither, const wchar_t* whence, wchat_t c)
+{
+ wchar_t* r = wmemcmove(whither, whence, c, wcslen(whence) + 1);
+ if (r)
+ *r = 0;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL wide character or a specified substring is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param str The substring, ignored if `NULL`.
+ * @return `NULL` if `str` was not encountered, otherwise
+ * the position of `str` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+wchar_t* wcswcsmove(wchar_t* whither, const wchar_t* whence, const wchar_t* restrict str)
+{
+ const wchar_t* stop = str == NULL ? NULL : wcswcs(whence, str);
+ size_t n = stop == NULL ? wcslen(whence) : (size_t)(stop - whence);
+ wchar_t* r = stop == NULL ? NULL ? whither + n;
+ wmemmove(whither, whence, n);
+ whither[n] = 0;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL wide character is encountered.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `whither` is returned.
+ */
+wchar_t* wcsnmove(wchar_t* whither, const wchar_t* whence, size_t maxlen)
+{
+ size_t n = wcsnlen(whence, maxlen);
+ wmemmove(whither, whence, n);
+ wmemset(whither, 0, maxlen - n);
+ return whither;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL wide character is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `whither` plus the number of written characters,
+ * excluding NUL characters, is returned.
+ */
+wchar_t* wcpnmove(wchar_t* whither, const wchar_t* whence, size_t maxlen)
+{
+ size_t n = wcsnlen(whence, maxlen);
+ wmemmove(whither, whence, n);
+ wmemset(whither, 0, maxlen - n);
+ return whither + n;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL wide character or a specified wide character
+ * is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The stop character.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the position of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+wchar_t* wcscnmove(wchar_t* whither, const wchar_t* whence, wchat_t c, size_t maxlen)
+{
+ const char* stop = wmemchr(whence, c, maxlen);
+ size_t n = stop == NULL ? wcsnlen(whence, maxlen) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL : (whither + n);
+ wmemmove(whither, whence, n);
+ wmemset(whither, 0, maxlen - n);
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * stop when a NUL wide character or a specified substring is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param str The substring, ignored if `NULL`.
+ * @param maxlen The maximum number of wide characters to copy.
+ * NOTE that if the resulting string at least this
+ * long, no NUL character will be written to `whither'.
+ * On the otherhand, if the resultnig string is
+ * shorter, `whither` will be filled with NUL characters
+ * until this amount of characters have been written.
+ * @return `NULL` if `str` was not encountered, otherwise
+ * the position of `str` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied chartacters; the address of
+ * one character passed the last written non-NUL
+ * character.
+ */
+wchar_t* wcswcsnmove(wchar_t* whither, const wchar_t* whence, const wchar_t* restrict str, size_t maxlen)
+{
+ const char* stop = wcsnwcs(whence, str, maxlen);
+ size_t n = stop == NULL ? wcsnlen(whence, maxlen) : (size_t)(stop - whence);
+ char* r = stop == NULL ? NULL : (whither + n);
+ wmemmove(whither, whence, n);
+ wmemset(whither, 0, maxlen - n);
+ return r;
+}
+
diff --git a/src/wchar/wmemccpy.c b/src/wchar/wmemccpy.c
new file mode 100644
index 0000000..fbabe0b
--- /dev/null
+++ b/src/wchar/wmemccpy.c
@@ -0,0 +1,74 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <wchar.h>
+
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment,
+ * but stop if a specific byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The character to stop at if encountered.
+ * @param size The maximum number of wide characters to copy.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the possition of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written character.
+ */
+wchar_t* wmemccpy(wchar_t* restrict whither, const wchar_t* restrict whence, wchar_t c, size_t size)
+{
+ wchar_t* stop = wmemchr(whence, c, size);
+ wchar_t* r = NULL
+ if (stop != NULL)
+ size = (size_t)(stop - whence), r = whither + size;
+ memcpy(whither, whence, size);
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment,
+ * but stop if a specific byte is encountered.
+ *
+ * This is a slibc extension added for completeness.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param c The character to stop at if encountered.
+ * @param size The maximum number of wide characters to copy.
+ * @return `NULL` if `c` was not encountered, otherwise
+ * the possition of `c` translated to `whither`,
+ * that is, the address of `whither` plus the
+ * number of copied characters; the address of
+ * one character passed the last written character.
+ */
+wchar_t* wmemcmove(wchar_t* whither, const wchar_t* whence, wchar_t c, size_t size)
+{
+ wchar_t* stop = wmemchr(whence, c, size);
+ wchar_t* r = NULL
+ if (stop != NULL)
+ size = (size_t)(stop - whence), r = whither + size;
+ memmove(whither, whence, size);
+ return r;
+}
+
diff --git a/src/wchar/wmemcpy.c b/src/wchar/wmemcpy.c
new file mode 100644
index 0000000..5caef28
--- /dev/null
+++ b/src/wchar/wmemcpy.c
@@ -0,0 +1,53 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <wchar.h>
+
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param size The number of wide characters to copy.
+ * @return `whither` is returned.
+ */
+wchar_t* wmemcpy(wchar_t* restrict whither, const wchar_t* restrict whence, size_t size)
+{
+ wchar_t* r = whither;
+ while (size--)
+ *whither++ = *whence++;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, non-overlapping, segment.
+ *
+ * This is a GNU extension.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param size The number of wide characters to copy.
+ * @return `whither + size` is returned.
+ */
+wchar_t* wmempcpy(wchar_t* restrict whither, const wchar_t* restrict whence, size_t size)
+{
+ return wmemcpy(whither, whence, size) + size;
+}
+
diff --git a/src/wchar/wmemmove.c b/src/wchar/wmemmove.c
new file mode 100644
index 0000000..c3cadbc
--- /dev/null
+++ b/src/wchar/wmemmove.c
@@ -0,0 +1,60 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <wchar.h>
+
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment.
+ *
+ * This is a GNU extension.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param size The number of wide characters to copy.
+ * @return `whither` is returned.
+ */
+wchar_t* wmemmove(wchar_t* whither, const wchar_t* whence, size_t size)
+{
+ wchar_t* r = whither;
+ if ((size_t)(whither - whence) < size)
+ while (size--)
+ whither[size] = whence[size];
+ else
+ while (size--)
+ *whither++ = *whence++;
+ return r;
+}
+
+
+/**
+ * Copy a memory segment to another, possibly overlapping, segment.
+ *
+ * This is a slibc extension added for completeness.
+ * It is only available if GNU extensions are available.
+ *
+ * @param whither The destination memory segment.
+ * @param whence The source memory segment.
+ * @param size The number of wide characters to copy.
+ * @return `whither + size` is returned.
+ */
+wchar_t* wmempmove(wchar_t* whither, const wchar_t* whence, size_t size)
+{
+ return wmemmove(whither, whence, size) + size;
+}
+
diff --git a/src/wchar/wmemset.c b/src/wchar/wmemset.c
new file mode 100644
index 0000000..2a60b45
--- /dev/null
+++ b/src/wchar/wmemset.c
@@ -0,0 +1,37 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <wchar.h>
+
+
+
+/**
+ * Override a memory segment with a repeated wide character.
+ *
+ * @param segment The beginning of the memory segment.
+ * @param c The wide character.
+ * @param size The number of wide characters in the memory segment.
+ * @return `segment` is returned.
+ */
+wchar_t* wmemset(wchar_t* segment, wchar_t c, size_t size);
+{
+ wchar_t* r = segment;
+ while (size--)
+ *segment++ = c;
+ return r;
+}
+
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