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| author | Rich Felker <dalias@aerifal.cx> | 2012-03-15 19:56:36 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-03-15 19:56:36 -0400 |
| commit | 9d507419db1289033c59da6976f8675f24ab873f (patch) | |
| tree | 622fe4942ed4255c860c8190c9a445b60f53febd /src | |
| parent | 1295848efb9171011e79610a5c3ab7c20859ea36 (diff) | |
| download | musl-9d507419db1289033c59da6976f8675f24ab873f.tar.gz musl-9d507419db1289033c59da6976f8675f24ab873f.tar.xz musl-9d507419db1289033c59da6976f8675f24ab873f.zip | |
remove special nan handling from x86 sqrt asm
a double precision nan, when converted to extended (80-bit) precision, will never end in 0x400, since the corresponding bits do not exist in the original double precision value. thus there's no need to waste time and code size on this check.
Diffstat (limited to 'src')
| -rw-r--r-- | src/math/i386/sqrt.s | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/src/math/i386/sqrt.s b/src/math/i386/sqrt.s index 1bd3b05e..8289d094 100644 --- a/src/math/i386/sqrt.s +++ b/src/math/i386/sqrt.s @@ -10,9 +10,6 @@ sqrt: fldl 4(%esp) and $0x7ff,%ecx cmp $0x400,%ecx jnz 1f - mov 8(%esp),%cx - inc %cx - jo 1f and $0x200,%eax sub $0x100,%eax sub %eax,(%esp) |