diff options
Diffstat (limited to 'libgo/go/math/cmplx/tan.go')
| -rw-r--r-- | libgo/go/math/cmplx/tan.go | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/libgo/go/math/cmplx/tan.go b/libgo/go/math/cmplx/tan.go index 9485315..2990552 100644 --- a/libgo/go/math/cmplx/tan.go +++ b/libgo/go/math/cmplx/tan.go @@ -120,9 +120,9 @@ func tanSeries(z complex128) float64 { rn := 0.0 d := 0.0 for { - rn += 1 + rn++ f *= rn - rn += 1 + rn++ f *= rn x2 *= x y2 *= y @@ -130,16 +130,18 @@ func tanSeries(z complex128) float64 { t /= f d += t - rn += 1 + rn++ f *= rn - rn += 1 + rn++ f *= rn x2 *= x y2 *= y t = y2 - x2 t /= f d += t - if math.Abs(t/d) <= MACHEP { + if !(math.Abs(t/d) > MACHEP) { + // Caution: Use ! and > instead of <= for correct behavior if t/d is NaN. + // See issue 17577. break } } |