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-rw-r--r--gen/bits/intconf.c52
-rw-r--r--gen/bits/intconf.h117
-rw-r--r--include/assert.h2
-rw-r--r--include/bits/types.h3
-rw-r--r--include/inttypes.h61
-rw-r--r--include/iso646.h50
-rw-r--r--include/memory.h10
-rw-r--r--src/ctype.c6
-rw-r--r--src/slibc-alloc.c23
-rw-r--r--src/string/substring.h12
10 files changed, 335 insertions, 1 deletions
diff --git a/gen/bits/intconf.c b/gen/bits/intconf.c
index 7e48fce..5a52d12 100644
--- a/gen/bits/intconf.c
+++ b/gen/bits/intconf.c
@@ -21,7 +21,18 @@
+/**
+ * Used to determine the signness of `char`.
+ */
volatile char nul = 0;
+
+/**
+ * Used to determine the signness of `wchar_t`.
+ *
+ * Note that `wchar_t` is set implicitly by the
+ * help of the compiler so that our libc does
+ * not taint the result.
+ */
volatile typeof(L'\0') wnul = 0;
@@ -35,6 +46,15 @@ volatile typeof(L'\0') wnul = 0;
*/
+/**
+ * Measure the performance of a intrinsic integer type,
+ * and if it is faster than the previous candidate (or
+ * is the first candidate,) store it as the, yet, most
+ * performant candidate.
+ *
+ * @param VAR A volatile register variable of the
+ * type that shall be tested.
+ */
#define FAST_TEST(VAR) \
n = 0, *VAR##p = 0; \
if (clock_gettime(CLOCK_THREAD_CPUTIME_ID, &start)) \
@@ -65,10 +85,26 @@ volatile typeof(L'\0') wnul = 0;
last = this
+/**
+ * Determine whether the performance of `typeof(VAR)` should be determined,
+ * when finding the most performant, compatiable intrinsic type of a `int_fastN_t`.
+ *
+ * @param VAR An variable of the type (or the type itself) that is a candidate.
+ * @return Determine whether the type shall be tested.
+ */
#define TEST(VAR) (this = 8 * (int)sizeof(VAR), ((this >= bits) && (this > last)))
+
#if defined(__GNUC__)
__attribute__((optimize("-O0")))
#endif
+/**
+ * Find the (in general) fastest intrinsic integer type,
+ * that has at least a specified number of bits.
+ *
+ * @param bits The minimum number of bits the type may have.
+ * @return The number of bits the most performance
+ * compatible integer type has.
+ */
static int fast(int bits)
{
int last = 0, this = 0, best = 0, n, m;
@@ -103,11 +139,26 @@ static int fast(int bits)
#undef TEST
+/**
+ * @param argc The number of command line arguments, should
+ * be either 1 (print integer width information)
+ * or 2 (otherwise).
+ * @param argv Command line arguments, if `argc == 2`, `argv[2]`
+ * is interpreted as follows:
+ * - "fast8" Print the number of bits in `int_fast8_t` and `uint_fast8_t`.
+ * - "fast16" Print the number of bits in `int_fast16_t` and `uint_fast16_t`.
+ * - "fast32" Print the number of bits in `int_fast32_t` and `uint_fast32_t`.
+ * - "fast64" Print the number of bits in `int_fast64_t` and `uint_fast64_t`.
+ * - "char-signed" Print 1 if `char` is signed, and `0` if it is unsigned.
+ * - "wchar-signed" Print 1 if `wchar_t` is signed, and `0` if it is unsigned.
+ * @return 0 on success, 1 on error (including printing error.)
+ */
int main(int argc, char* argv[])
{
int r = 0;
if (argc < 2)
{
+ /* Print the number of bits in the intrinsic integers types. */
r |= printf("CHAR_BIT %zu\n", 8 * sizeof(char));
r |= printf("SHORT_BIT %zu\n", 8 * sizeof(short int));
r |= printf("INT_BIT %zu\n", 8 * sizeof(int));
@@ -116,6 +167,7 @@ int main(int argc, char* argv[])
r |= printf("PTR_BIT %zu\n", 8 * sizeof(void*));
r |= printf("WCHAR_BIT %zu\n", 8 * sizeof(L'\0'));
+ /* Print the intrinsic type for specific numbers of bits. */
r |= printf("INT%zu %s\n", 8 * sizeof(char), "char");
r |= printf("INT%zu %s\n", 8 * sizeof(short int), "short int");
r |= printf("INT%zu %s\n", 8 * sizeof(int), "int");
diff --git a/gen/bits/intconf.h b/gen/bits/intconf.h
index 128b0ba..69ea473 100644
--- a/gen/bits/intconf.h
+++ b/gen/bits/intconf.h
@@ -24,41 +24,156 @@
//>FAST32=$(bin/gen/bits/intconf fast32)
//>FAST64=$(bin/gen/bits/intconf fast64)
-#define __MAX_TO_MIN(max) (-(max) - 1)
+
+/**
+ * Converts an integer's maximum value to
+ * its [the integer's] minimum value.
+ */
+#define __MAX_TO_MIN(max) (-(max) - 1) /* TODO compiler-flag-dependent */
+
+/* TODO compiler-flag-dependent */
#if //(bin/gen/bits/intconf char-signed)
+/**
+ * Set if and only if `char` is signed by default.
+ */
# define __CHAR_SIGNED
+
+/**
+ * The default signness-modifiers for `char`.
+ */
# define __CHAR_SIGNNESS signed
#else
# define __CHAR_SIGNNESS unsigned
#endif
+
#if //(bin/gen/bits/intconf wchar-signed)
+/**
+ * Set if and only if `wchar_t` is signed by default.
+ */
# define __WCHAR_SIGNED
+
+/**
+ * The default signness-modifiers for `wchar_t`.
+ */
# define __WCHAR_SIGNNESS signed
#else
# define __WCHAR_SIGNNESS unsigned
#endif
+
+/**
+ * The number of bits in `char`.
+ * (8 is mandatates, but I did it thus way for uniformity.)
+ */
#define __CHAR_BIT //(bin/gen/bits/intconf | grep ^CHAR_BIT | sed "s/^[^ ]* //")
+
+/**
+ * The number of bits in `short int`.
+ */
#define __SHORT_BIT //(bin/gen/bits/intconf | grep ^SHORT_BIT | sed "s/^[^ ]* //")
+
+/**
+ * The number of bits in `int`.
+ */
#define __INT_BIT //(bin/gen/bits/intconf | grep ^INT_BIT | sed "s/^[^ ]* //")
+
+/**
+ * The number of bits in `long int`.
+ */
#define __LONG_BIT //(bin/gen/bits/intconf | grep ^LONG_BIT | sed "s/^[^ ]* //")
+
+/**
+ * The number of bits in `long long int`.
+ */
#define __LONG_LONG_BIT //(bin/gen/bits/intconf | grep ^LONG_LONG_BIT | sed "s/^[^ ]* //")
+
+/**
+ * The number of bits in `void*`.
+ */
#define __PTR_BIT //(bin/gen/bits/intconf | grep ^PTR_BIT | sed "s/^[^ ]* //")
+
+/**
+ * The number of bits in `wchar`.
+ */
#define __WCHAR_BIT //(bin/gen/bits/intconf | grep ^WCHAR_BIT | sed "s/^[^ ]* //")
+
+/**
+ * The underlaying intrinsic type for `int8_t` or `uint8_t`.
+ */
#define __INT8 //(bin/gen/bits/intconf | grep ^INT8 | sed "s/^[^ ]* //" | sed 1q)
+
+/**
+ * The underlaying intrinsic type for `int16_t` or `uint16_t`.
+ */
#define __INT16 //(bin/gen/bits/intconf | grep ^INT16 | sed "s/^[^ ]* //" | sed 1q)
+
+/**
+ * The underlaying intrinsic type for `int32_t` or `uint32_t`.
+ */
#define __INT32 //(bin/gen/bits/intconf | grep ^INT32 | sed "s/^[^ ]* //" | sed 1q)
+
+/**
+ * The underlaying intrinsic type for `int64_t` or `uint64_t`.
+ */
#define __INT64 //(bin/gen/bits/intconf | grep ^INT64 | sed "s/^[^ ]* //" | sed 1q)
+
+/**
+ * The underlaying intrinsic type for `int8_t` or `uint8_t`.
+ */
#define __INT_FAST8 __INT//{FAST8}
+
+/**
+ * The underlaying intrinsic type for `int16_t` or `uint16_t`.
+ */
#define __INT_FAST16 __INT//{FAST16}
+
+/**
+ * The underlaying intrinsic type for `int32_t` or `uint32_t`.
+ */
#define __INT_FAST32 __INT//{FAST32}
+
+/**
+ * The underlaying intrinsic type for `int64_t` or `uint64_t`.
+ */
#define __INT_FAST64 __INT//{FAST64}
+
+/**
+ * The maximum value of `int_fast8_t`.
+ */
#define __INT_FAST8_MAX INT//{FAST8}_MAX
+
+/**
+ * The maximum value of `int_fast16_t`.
+ */
#define __INT_FAST16_MAX INT//{FAST16}_MAX
+
+/**
+ * The maximum value of `int_fast32_t`.
+ */
#define __INT_FAST32_MAX INT//{FAST32}_MAX
+
+/**
+ * The maximum value of `int_fast64_t`.
+ */
#define __INT_FAST64_MAX INT//{FAST64}_MAX
+
+/**
+ * The maximum value of `uint_fast8_t`.
+ */
#define __UINT_FAST8_MAX UINT//{FAST8}_MAX
+
+/**
+ * The maximum value of `uint_fast16_t`.
+ */
#define __UINT_FAST16_MAX UINT//{FAST16}_MAX
+
+/**
+ * The maximum value of `uint_fast32_t`.
+ */
#define __UINT_FAST32_MAX UINT//{FAST32}_MAX
+
+/**
+ * The maximum value of `uint_fast64_t`.
+ */
#define __UINT_FAST64_MAX UINT//{FAST64}_MAX
diff --git a/include/assert.h b/include/assert.h
index 9f964e0..12b20eb 100644
--- a/include/assert.h
+++ b/include/assert.h
@@ -72,6 +72,8 @@
+/* The definitions above shall be redefined at any time this header file
+ * is included. The definitions below are static, and thus guarded. */
#ifndef _ASSERT_H
#define _ASSERT_H
diff --git a/include/bits/types.h b/include/bits/types.h
index b7d0bd6..8e40b87 100644
--- a/include/bits/types.h
+++ b/include/bits/types.h
@@ -23,6 +23,9 @@
#include <bits/intconf.h>
+/* TODO [u]int(|_least|_fast)$N_t are compiler-dependent and may even
+ * be compiler-flag-dependent. Some CPP-magic is required to
+ * figure there exact underlaying intrinsic type and existence. */
/* Ensure that dependencies for type are defined. */
diff --git a/include/inttypes.h b/include/inttypes.h
index 5272ebc..3bae82a 100644
--- a/include/inttypes.h
+++ b/include/inttypes.h
@@ -63,33 +63,94 @@ intmax_t imaxabs(intmax_t)
/* Printing and scanning code affixes. */
+/**
+ * Length modifier affix for printing an `int8_t` or an `uint8_t`.
+ * For internal use, not libc-portable.
+ */
#define __PRI8 ""
+
+/**
+ * Length modifier affix for scanning an `int8_t` or an `uint8_t`.
+ * For internal use, not libc-portable.
+ */
#define __SCN8 "hh"
+
+/**
+ * Length modifier affix for printing an `int16_t` or an `uint16_t`.
+ * For internal use, not libc-portable.
+ */
#define __PRI16 ""
+
+/**
+ * Length modifier affix for scanning an `int16_t` or an `uint16_t`.
+ * For internal use, not libc-portable.
+ */
#define __SCN16 "h"
+
#if __INT_BIT == 32
+/**
+ * Length modifier affix for printing an `int32_t` or an `uint32_t`.
+ * For internal use, not libc-portable.
+ */
# define __PRI32 ""
+
+/**
+ * Length modifier affix for scanning an `int32_t` or an `uint32_t`.
+ * For internal use, not libc-portable.
+ */
# define __SCN32 ""
#else
# define __PRI32 "l"
# define __SCN32 "l"
#endif
+
#if __LONG_BIT == 64
+/**
+ * Length modifier affix for printing an `int64_t` or an `uint64_t`.
+ * For internal use, not libc-portable.
+ */
# define __PRI64 "l"
+
+/**
+ * Length modifier affix for scanning an `int64_t` or an `uint64_t`.
+ * For internal use, not libc-portable.
+ */
# define __SCN64 "l"
#else
# define __PRI64 "ll"
# define __SCN64 "ll"
#endif
+
+/**
+ * Length modifier affix for printing an `intmax_t` or an `uintmax_t`.
+ * For internal use, not libc-portable.
+ */
#define __PRIMAX "j"
+
+/**
+ * Length modifier affix for scanning an `intmax_t` or an `uintmax_t`.
+ * For internal use, not libc-portable.
+ */
#define __SCNMAX "j"
+
#if __PTR_BIT == 8
+/**
+ * Length modifier affix for printing an `intptr_t`, an `uintptr_t`,
+ * a `ptrdiff_t`, an `uptrdiff_t`, an `ssize_t, or a `size_t`.
+ * For internal use, not libc-portable.
+ */
# define __PRIPTR __PRI8
+
+/**
+ * Length modifier affix for scanning an `intptr_t`, an `uintptr_t`,
+ * a `ptrdiff_t`, an `uptrdiff_t`, an `ssize_t, or a `size_t`.
+ * For internal use, not libc-portable.
+ */
# define __SCNPTR __SCN8
#elif __PTR_BIT == 16
# define __PRIPTR __PRI16
diff --git a/include/iso646.h b/include/iso646.h
index c0c7a51..51edb6a 100644
--- a/include/iso646.h
+++ b/include/iso646.h
@@ -25,17 +25,67 @@
#endif
+/* These defitions were added in C95 to make it easier incase
+ * your keyboard layout does not have these characters.
+ * Interestingly, all other ASCII punctuation was not considered.
+ * Also, if you really need this, using the terminal must be
+ * a pain in the ass for you. */
+
+
+/**
+ * Alias for logical and (&&).
+ */
#define and &&
+
+/**
+ * Alias for bitwise and assignement (&=).
+ */
#define and_eq &=
+
+/**
+ * Alias for bitwise and (&).
+ */
#define bitand &
+
+/**
+ * Alias for bitwise inclusive or (|).
+ */
#define bitor |
+
+/**
+ * Alias for bitwise complement (~).
+ */
#define compl ~
+
+/**
+ * Alias for logical complement (!).
+ */
#define not !
+
+/**
+ * Alias for inequality comparer (!=).
+ */
#define not_eq !=
+
+/**
+ * Alias for logical inclusive (||).
+ */
#define or ||
+
+/**
+ * Alias for bitwise inclusive or assignment (|=).
+ */
#define or_eq |=
+
+/**
+ * Alias for bitwise exclusive or (^).
+ */
#define xor ^
+
+/**
+ * Alias for bitwise exclusive or assignment (^=).
+ */
#define xor_eq ^=
diff --git a/include/memory.h b/include/memory.h
index 795e07e..f0a7f6f 100644
--- a/include/memory.h
+++ b/include/memory.h
@@ -15,5 +15,15 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#ifndef _MEMORY_H
+#define _MEMORY_H
#include <string.h>
+
+#if !defined(_SLIBC_SUPPRESS_WARNINGS)
+# warning "Please include <string.h> instead of <memory.h>."
+#endif
+
+
+#endif
+
diff --git a/src/ctype.c b/src/ctype.c
index 2c8fe83..3923def 100644
--- a/src/ctype.c
+++ b/src/ctype.c
@@ -268,6 +268,12 @@ int _toupper(int c)
+/**
+ * Create a variant, with specifiable locale,
+ * of one of the functions.
+ *
+ * @param The name of the function without the `_l`-suffix.
+ */
#define CTYPE_LOCALE(F) \
int F##_l(int c, locale_t locale) \
{ \
diff --git a/src/slibc-alloc.c b/src/slibc-alloc.c
index 604eff1..a7ae30a 100644
--- a/src/slibc-alloc.c
+++ b/src/slibc-alloc.c
@@ -25,8 +25,31 @@
+/**
+ * Get the alignment-shift of a pointer.
+ *
+ * @param p:void* The pointer.
+ * @return :size_t The number of bytes added for alignment.
+ * This excludes the information this macro
+ * reads, and the storage of the allocation-size.
+ */
#define __ALIGN(p) (*(size_t*)(((char*)(p)) - sizeof(size_t)))
+
+/**
+ * Get the allocated pointer from a returned pointer.
+ *
+ * @param p:void* The pointer returned by a `malloc`-family function.
+ * @return The pointer allocated by a `malloc`-family function.
+ */
#define PURE_ALLOC(p) (((char*)(p)) - (__ALIGN(p) + 2 * sizeof(size_t)))
+
+/**
+ * Get the real allocation is of a pointer, including
+ * the size of the metadata storage and the alignment-padding.
+ *
+ * @param p:void* The pointer.
+ * @return :size_t The real allocation size of the pointer.
+ */
#define PURE_SIZE(p) (*(size_t*)PURE_ALLOC(p) + 2 * sizeof(size_t))
diff --git a/src/string/substring.h b/src/string/substring.h
index 9d6dbfe..05ef7cc 100644
--- a/src/string/substring.h
+++ b/src/string/substring.h
@@ -30,6 +30,16 @@
/* The Knuth–Morris–Pratt algorithm. */
+/**
+ * Test whether to characters are equal.
+ * Case-sensitivity depends on `CASE` being defined.
+ *
+ * @param a One of the characters.
+ * @param b The other character.
+ * @return 1 if `a` and `b` or equal, 0 otherwise.
+ * The comparison is case-insensitive if
+ * `CASE` is defined.
+ */
#if !defined(CASE)
# define CHREQ(a, b) (a == b)
#elif !defined(WIDE)
@@ -42,6 +52,8 @@
/* TODO add support for RIGHT */
+/* The implementation of the algorithm, read
+ * elsewhere for documentation/explanation. */
{
ssize_t* next_map = alloca((needle_length + 1) * sizeof(ssize_t));
ssize_t hay, ned, skp;
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-21 15:06:08 +0000