From 61c59ab7c654228d96efb03f8c3df79c839bbc3a Mon Sep 17 00:00:00 2001 From: bigfoot547 Date: Fri, 8 Nov 2024 23:17:32 -0600 Subject: add comment --- calc_pi.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'calc_pi.c') diff --git a/calc_pi.c b/calc_pi.c index c3aa4da..5277d33 100644 --- a/calc_pi.c +++ b/calc_pi.c @@ -6,6 +6,17 @@ #include #include +/* This file is C99. Here is some information about compiling this file: + * $ (source /etc/os-release; echo $PRETTY_NAME); uname -a + * Debian GNU/Linux trixie/sid + * Linux redacted 6.11.6-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.11.6-1 (2024-11-04) x86_64 GNU/Linux + * $ gcc -ocalc_pi_real calc_pi.c -Wall -Wextra -pedantic -lm -std=c99 -mavx2 -DPOPCOUNT=real_pc -O3 + * $ gcc -ocalc_pi_fake calc_pi.c -Wall -Wextra -pedantic -lm -std=c99 -O3 + * $ diff -s <(./calc_pi_real 1000) <(./calc_pi_fake 1000) + * Files /dev/fd/63 and /dev/fd/62 are identical + * $ + */ + #ifdef __GNUC__ #define GCC_ALWAYS_INLINE inline __attribute__((always_inline)) #else -- cgit v1.2.3-70-g09d2