fluencelabs/musl
1
0
Fork 0
mirror of https://github.com/fluencelabs/musl synced 2025-06-30 07:02:41 +00:00
Code Issues Projects Releases Wiki Activity

math: excess precision fix modf, modff, scalbn, scalbnf

Browse Source 
old code was correct only if the result was stored (without the
excess precision) or musl was compiled with -ffloat-store.
now we use STRICT_ASSIGN to work around the issue.
(see note 160 in c11 section 6.8.6.4)
This commit is contained in:
Szabolcs Nagy
2012-11-13 10:55:35 +01:00
parent 666271c105
commit c4359e0130
4 changed files with 18 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/math/modff.c
View File

@ -1,5 +1,4 @@
#include <math.h>
#include <stdint.h>
#include "libm.h"
float modff(float x, float *iptr)
{
@ -33,5 +32,6 @@ float modff(float x, float *iptr)
}
u.n &= ~mask;
*iptr = u.x;
return x - *iptr;
STRICT_ASSIGN(float, x, x - *iptr);
return x;
}