generic-library/bionic
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Merge "Switch fpclassify over to ieee_ext."

Browse Source
This commit is contained in:
Elliott Hughes 2014-04-16 23:57:06 +00:00 committed by Gerrit Code Review
commit 8da69a25b7
1 changed files with 7 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
libc/bionic/fpclassify.cpp
View File

@ -96,22 +96,19 @@ __strong_alias(isnanf, __isnanf);
union long_double_u {
long double ld;
struct {
unsigned long fracl:64;
unsigned long frach:48;
unsigned int exp:15;
unsigned int sign:1;
} bits;
ieee_ext bits;
};
#define zero_frac(b) ((b.ext_fracl | b.ext_fraclm | b.ext_frachm | b.ext_frach) == 0)
int __fpclassifyl(long double ld) {
long_double_u u;
u.ld = ld;
if (u.bits.exp == 0) {
return ((u.bits.fracl | u.bits.frach) == 0) ? FP_ZERO : FP_SUBNORMAL;
if (u.bits.ext_exp == 0) {
return zero_frac(u.bits) ? FP_ZERO : FP_SUBNORMAL;
}
if (u.bits.exp == EXT_EXP_INFNAN) {
return ((u.bits.fracl | u.bits.frach) == 0) ? FP_INFINITE : FP_NAN;
if (u.bits.ext_exp == EXT_EXP_INFNAN) {
return zero_frac(u.bits) ? FP_INFINITE : FP_NAN;
}
return FP_NORMAL;
}