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| author | Rob Pike <r@golang.org> | 2011-02-11 16:06:04 -0800 |
|---|---|---|
| committer | Rob Pike <r@golang.org> | 2011-02-11 16:06:04 -0800 |
| commit | a67292f20f5248f6a189622c9d0e858942659789 (patch) | |
| tree | 782a7234d6cbd36932e2ab594f367eba56b26846 | |
| parent | a93c994bcf4c3ca75a25f2703ab7a66d9a84c4e3 (diff) | |
| download | go-a67292f20f5248f6a189622c9d0e858942659789.tar.gz go-a67292f20f5248f6a189622c9d0e858942659789.zip | |
strconv/ftoa: avoid a double shift. (shifts by variables are expensive.)
R=rsc, gri, r2
CC=golang-dev
https://golang.org/cl/4169048
| -rw-r--r-- | src/pkg/strconv/ftoa.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/pkg/strconv/ftoa.go b/src/pkg/strconv/ftoa.go index 4ec3cdbb97..b6049c5458 100644 --- a/src/pkg/strconv/ftoa.go +++ b/src/pkg/strconv/ftoa.go @@ -64,7 +64,7 @@ func FtoaN(f float64, fmt byte, prec int, n int) string { } func genericFtoa(bits uint64, fmt byte, prec int, flt *floatInfo) string { - neg := bits>>flt.expbits>>flt.mantbits != 0 + neg := bits>>(flt.expbits+flt.mantbits) != 0 exp := int(bits>>flt.mantbits) & (1<<flt.expbits - 1) mant := bits & (uint64(1)<<flt.mantbits - 1) |