On Wed, 2004-09-29 at 21:37, Bruce Momjian wrote: > The reason MemSet is a win is not that the C code is great but because > it eliminates a function call.
A reasonable compiler ought to be able to implement memset() as a compiler intrinsic where it makes sense to do so. MSVC++ can certainly do this; per the GCC 3.4 docs, it seems GCC can/does as well: The ISO C90 functions abort, abs, acos, asin, atan2, atan, calloc, ceil, cosh, cos, exit, exp, fabs, floor, fmod, fprintf, fputs, frexp, fscanf, labs, ldexp, log10, log, malloc, memcmp, memcpy, memset, modf, pow, printf, putchar, puts, scanf, sinh, sin, snprintf, sprintf, sqrt, sscanf, strcat, strchr, strcmp, strcpy, strcspn, strlen, strncat, strncmp, strncpy, strpbrk, strrchr, strspn, strstr, tanh, tan, vfprintf, vprintf and vsprintf are all recognized as built-in functions unless -fno-builtin is specified (or -fno-builtin-function is specified for an individual function). All of these functions have corresponding versions prefixed with __builtin_. (http://gcc.gnu.org/onlinedocs/gcc-3.4.2/gcc/Other-Builtins.html#Other-Builtins) -Neil ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
