https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97086
Bug ID: 97086
Summary: aix: ceilf and truncf do not preserve the sign bit
when output is rounded to 0
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mfarazma.ext at gmail dot com
Target Milestone: ---
Test program:
#include <iostream>
#include <math.h>
int main(){
float input = -0.1;
printf("%f\n", ceilf(-0.1)); // -0.000000 , correct
printf("%f\n", ceilf(input)); // 0.000000 , wrong
return 0;
}
Compile with:
g++ test.cc
./a.out
"ceilf" does not preserve the sign bit when its input is passed by value and
the output is rounded to 0.
The same happens when using "truncf".
