diff options
Diffstat (limited to '')
| -rw-r--r-- | rawmemelemmove.c | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/rawmemelemmove.c b/rawmemelemmove.c new file mode 100644 index 0000000..c663219 --- /dev/null +++ b/rawmemelemmove.c @@ -0,0 +1,340 @@ +/* See LICENSE file for copyright and license details. */ +#include "libsimple.h" +#ifndef TEST + + +#define RAWMEMELEMMOVE(TYPE)\ + do {\ + TYPE *p;\ + size_t n;\ + if (d <= s) {\ + for (; (*d++ = *s) != elem; s++);\ + return d;\ + } else {\ + for (p = *(TYPE **)(void *)&s; *p++ != elem;);\ + n = (size_t)(p - s);\ + p = &d[n];\ + while (n) {\ + n--;\ + d[n] = s[n];\ + }\ + return p;\ + }\ + } while (0) + + +static uint16_t * +rawmemelemmove16(uint16_t *restrict d, const uint16_t *restrict s, uint16_t elem) +{ + RAWMEMELEMMOVE(uint16_t); +} + + +static uint32_t * +rawmemelemmove32(uint32_t *restrict d, const uint32_t *restrict s, uint32_t elem) +{ + RAWMEMELEMMOVE(uint32_t); +} + + +static uint64_t * +rawmemelemmove64(uint64_t *restrict d, const uint64_t *restrict s, uint64_t elem) +{ + RAWMEMELEMMOVE(uint64_t); +} + + +static char * +rawmemelemmovex(char *restrict d, const char *restrict s, const char *restrict elem, size_t size) +{ + char *p; + size_t i, n; + if (d <= s) { + for (;; s += size) { + for (i = 0; i < size; i++) + d[i] = s[i]; + for (i = 0; i < size; i++) + if (d[i] != elem[i]) + goto next_forwards; + d += size; + return d; + next_forwards: + d += size; + } + } else { + for (p = *(char **)(void *)&s;;) { + for (i = 0; i < size; i++) + if (p[i] != elem[i]) + goto next_backwards; + p += size; + break; + next_backwards: + p += size; + } + n = (size_t)(p - s); + p = &d[n]; + while (n) { + n--; + d[n] = s[n]; + } + return p; + } +} + + +void * +libsimple_rawmemelemmove(void *d, const void *s, const void *restrict elem, size_t size) /* TODO man */ +{ + switch (size) { + case 0: + return d; + case 1: + return rawmemcmove(d, s, *(const char *)elem); + case 2: + return rawmemelemmove16(d, s, *(const uint16_t *)elem); + case 4: + return rawmemelemmove32(d, s, *(const uint32_t *)elem); + case 8: + return rawmemelemmove64(d, s, *(const uint64_t *)elem); + default: + return rawmemelemmovex(d, s, elem, size); + } +} + + +#else +#include "test.h" + +int +main(void) +{ + char buf[1024]; + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "", 0) == &buf[5]); + assert(!strncmp(buf, "-----hello-", 11)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "", 0) == &buf[3]); + assert(!strncmp(buf, "-----hello-", 11)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[3], "", 0) == &buf[5]); + assert(!strncmp(buf, "-----hello-", 11)); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "o", 1) == &buf[5 + 5]); + assert(!strncmp(buf, "-----hello-", 11)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-';; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "l", 1) == &buf[5 + 3]); + assert(!strncmp(buf, "-----hello-", 11)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "o", 1) == &buf[3 + 5]); + assert(!strncmp(buf, "---hellolo-", 11)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "l", 1) == &buf[3 + 3]); + assert(!strncmp(buf, "---helello-", 11)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "o", 1) == &buf[8 + 5]); + assert(!strncmp(buf, "-----helhello-", 14)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "hello")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "l", 1) == &buf[8 + 3]); + assert(!strncmp(buf, "-----helhel-", 12)); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".h.e.l.l.o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], ".o", 2) == &buf[5 + 5 * 2]); + assert(!strncmp(buf, "-----.h.e.l.l.o-", 16)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".h.e.l.l.o")[0] = '-';; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], ".l", 2) == &buf[5 + 3 * 2]); + assert(!strncmp(buf, "-----.h.e.l.l.o-", 16)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".h.e.l.l.o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], ".o", 2) == &buf[3 + 5 * 2]); + assert(!strncmp(buf, "---.h.e.l.l.o.o-", 16)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".h.e.l.l.o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], ".l", 2) == &buf[3 + 3 * 2]); + assert(!strncmp(buf, "---.h.e.l.l.l.o-", 16)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".h.e.l.l.o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], ".o", 2) == &buf[8 + 5 * 2]); + assert(!strncmp(buf, "-----.h..h.e.l.l.o-", 19)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".h.e.l.l.o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], ".l", 2) == &buf[8 + 3 * 2]); + assert(!strncmp(buf, "-----.h..h.e.lo-", 16)); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..h..e..l..l..o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "..o", 3) == &buf[5 + 5 * 3]); + assert(!strncmp(buf, "-----..h..e..l..l..o-", 21)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..h..e..l..l..o")[0] = '-';; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "..l", 3) == &buf[5 + 3 * 3]); + assert(!strncmp(buf, "-----..h..e..l..l..o-", 21)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..h..e..l..l..o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "..o", 3) == &buf[3 + 5 * 3]); + assert(!strncmp(buf, "---..h..e..l..l..o.o-", 21)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..h..e..l..l..o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "..l", 3) == &buf[3 + 3 * 3]); + assert(!strncmp(buf, "---..h..e..l.l..l..o-", 21)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..h..e..l..l..o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "..o", 3) == &buf[8 + 5 * 3]); + assert(!strncmp(buf, "-----..h..h..e..l..l..o-", 24)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..h..e..l..l..o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "..l", 3) == &buf[8 + 3 * 3]); + assert(!strncmp(buf, "-----..h..h..e..l..o-", 21)); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...h...e...l...l...o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "...o", 4) == &buf[5 + 5 * 4]); + assert(!strncmp(buf, "-----...h...e...l...l...o-", 26)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...h...e...l...l...o")[0] = '-';; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "...l", 4) == &buf[5 + 3 * 4]); + assert(!strncmp(buf, "-----...h...e...l...l...o-", 26)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...h...e...l...l...o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "...o", 4) == &buf[3 + 5 * 4]); + assert(!strncmp(buf, "---...h...e...l...l...o.o-", 26)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...h...e...l...l...o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "...l", 4) == &buf[3 + 3 * 4]); + assert(!strncmp(buf, "---...h...e...l.l...l...o-", 26)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...h...e...l...l...o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "...o", 4) == &buf[8 + 5 * 4]); + assert(!strncmp(buf, "-----......h...e...l...l...o-", 29)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...h...e...l...l...o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "...l", 4) == &buf[8 + 3 * 4]); + assert(!strncmp(buf, "-----......h...e...ll...o-", 26)); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......h.......e.......l.......l.......o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], ".......o", 8) == &buf[5 + 5 * 8]); + assert(!strncmp(buf, "-----.......h.......e.......l.......l.......o-", 46)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......h.......e.......l.......l.......o")[0] = '-';; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], ".......l", 8) == &buf[5 + 3 * 8]); + assert(!strncmp(buf, "-----.......h.......e.......l.......l.......o-", 46)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......h.......e.......l.......l.......o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], ".......o", 8) == &buf[3 + 5 * 8]); + assert(!strncmp(buf, "---.......h.......e.......l.......l.......o.o-", 46)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......h.......e.......l.......l.......o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], ".......l", 8) == &buf[3 + 3 * 8]); + assert(!strncmp(buf, "---.......h.......e.......l.l.......l.......o-", 46)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......h.......e.......l.......l.......o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], ".......o", 8) == &buf[8 + 5 * 8]); + assert(!strncmp(buf, "-----..........h.......e.......l.......l.......o-", 49)); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......h.......e.......l.......l.......o")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], ".......l", 8) == &buf[8 + 3 * 8]); + assert(!strncmp(buf, "-----..........h.......e.......l....l.......o-", 46)); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".a.a.aa..a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "a.", 2) == &buf[5 + 4 * 2]); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".a.a.aa..a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "a.", 2) == &buf[3 + 4 * 2]); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".a.a.aa..a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "a.", 2) == &buf[8 + 4 * 2]); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..a..a..aa....a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "a..", 3) == &buf[5 + 4 * 3]); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..a..a..aa....a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "a..", 3) == &buf[3 + 4 * 3]); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "..a..a..aa....a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "a..", 3) == &buf[8 + 4 * 3]); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...a...a...aa......a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "a...", 4) == &buf[5 + 4 * 4]); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...a...a...aa......a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "a...", 4) == &buf[3 + 4 * 4]); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], "...a...a...aa......a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "a...", 4) == &buf[8 + 4 * 4]); + + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......a.......a.......aa..............a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[5], &buf[5], "a.......", 8) == &buf[5 + 4 * 8]); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......a.......a.......aa..............a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[3], &buf[5], "a.......", 8) == &buf[3 + 4 * 8]); + + memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0'; + stpcpy(&buf[5], ".......a.......a.......aa..............a")[0] = '-'; + assert(libsimple_rawmemelemmove(&buf[8], &buf[5], "a.......", 8) == &buf[8 + 4 * 8]); + + + return 0; +} + +#endif |