On 29/10/2024 09:54, Bertrand Drouvot wrote:
https://godbolt.org/z/x9hPWjheq.
Yeah, I also think that's fine. Peter Smith did some testing in [1] comparing
memcmp and simple loop checking (thanks Peter for the testing!):
"
Iterate 1000000 times...
check zeros using loop -- elapsed=0.041196s
check zeros using memcmp -- elapsed=0.016407s
"
So, in this test, the loop is 0.024789s longer means 0.024789s/1000000=24
Nanosecond
slower per comparison (If my math is correct).
I believe that test program is bogus. Look at the assembly code; the
compiler optimized away the loops.
--
Heikki Linnakangas
Neon (https://neon.tech)
