diff options
Diffstat (limited to 'libgo/go/strconv/extfloat.go')
| -rw-r--r-- | libgo/go/strconv/extfloat.go | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/libgo/go/strconv/extfloat.go b/libgo/go/strconv/extfloat.go index 32d3340..2a2dd7a 100644 --- a/libgo/go/strconv/extfloat.go +++ b/libgo/go/strconv/extfloat.go @@ -214,20 +214,9 @@ func (f *extFloat) Normalize() uint { // Multiply sets f to the product f*g: the result is correctly rounded, // but not normalized. func (f *extFloat) Multiply(g extFloat) { - fhi, flo := f.mant>>32, uint64(uint32(f.mant)) - ghi, glo := g.mant>>32, uint64(uint32(g.mant)) - - // Cross products. - cross1 := fhi * glo - cross2 := flo * ghi - - // f.mant*g.mant is fhi*ghi << 64 + (cross1+cross2) << 32 + flo*glo - f.mant = fhi*ghi + (cross1 >> 32) + (cross2 >> 32) - rem := uint64(uint32(cross1)) + uint64(uint32(cross2)) + ((flo * glo) >> 32) + hi, lo := bits.Mul64(f.mant, g.mant) // Round up. - rem += (1 << 31) - - f.mant += (rem >> 32) + f.mant = hi + (lo >> 63) f.exp = f.exp + g.exp + 64 } |