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| author | Rich Felker <dalias@aerifal.cx> | 2012-03-19 05:15:30 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-03-19 05:15:30 -0400 |
| commit | 58ff9e8eaf99f2294232be860daa2ca6f3674faf (patch) | |
| tree | b2fc48ab1eb651bdb5e023a3547747d558c888df /src/math/i386/scalbn.s | |
| parent | bc33e617040166e971ec1e6822ac1cc417eb6c9c (diff) | |
| download | musl-58ff9e8eaf99f2294232be860daa2ca6f3674faf.tar.gz musl-58ff9e8eaf99f2294232be860daa2ca6f3674faf.tar.xz musl-58ff9e8eaf99f2294232be860daa2ca6f3674faf.zip | |
asm for scalbn family
unlike some implementations, these functions perform the equivalent of gcc's -ffloat-store on the result before returning. this is necessary to raise underflow/overflow/inexact exceptions, perform the correct rounding with denormals, etc.
Diffstat (limited to 'src/math/i386/scalbn.s')
| -rw-r--r-- | src/math/i386/scalbn.s | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/math/i386/scalbn.s b/src/math/i386/scalbn.s new file mode 100644 index 00000000..e275d14f --- /dev/null +++ b/src/math/i386/scalbn.s @@ -0,0 +1,20 @@ +.global ldexp +.type ldexp,@function +ldexp: + nop + +.global scalbln +.type scalbln,@function +scalbln: + nop + +.global scalbn +.type scalbn,@function +scalbn: + fildl 12(%esp) + fldl 4(%esp) + fscale + fstp %st(1) + fstpl 4(%esp) + fldl 4(%esp) + ret |