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On anything modern, the C version, which processes a word at a time, is much faster. The Intel optimization manual explicitly warns against using REP prefixes with SCAS or CMPS, which is exactly what the assembler version does. A simple test on a Phenom II showed the C version, compiled with -O2, to be about twice as fast determining the length of 100000 strings between 0 and 255 bytes long. MFC after: 2 weeks |
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.. | ||
gen | ||
stdlib | ||
string | ||
sys | ||
_fpmath.h | ||
arith.h | ||
gd_qnan.h | ||
Makefile.inc | ||
Symbol.map | ||
SYS.h |