Module Name: src
Committed By: gdt
Date: Fri Sep 20 22:45:15 UTC 2024
Modified Files:
src/lib/libm/src: s_remquo.c
Log Message:
libm/remquo: Fix bug where remquo returned wrong sign of quo
ISO C requires that quo be congruent to the quotient mod 2^k and have
a particular sign. The current code can return 0 when it should be
negative.
Because the code chooses k=31 (for the requirement of congruence
modulo 2^k), the only value available (in ILP32 or LP64) that is
negative and congruent to 0 is 0x80000000. In the specific case of
wanting "-0", return 0x80000000.
Resolves t_remquo test failure.
\todo pullups
\todo check/fix remquof and remquol
To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/lib/libm/src/s_remquo.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
