diff options
Diffstat (limited to 'src/pkg/math/tan.go')
| -rw-r--r-- | src/pkg/math/tan.go | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/src/pkg/math/tan.go b/src/pkg/math/tan.go index 4e722e1ad..b2f29cc3b 100644 --- a/src/pkg/math/tan.go +++ b/src/pkg/math/tan.go @@ -88,13 +88,11 @@ func tan(x float64) float64 { PI4C = 2.69515142907905952645E-15 // 0x3ce8469898cc5170, M4PI = 1.273239544735162542821171882678754627704620361328125 // 4/pi ) - // TODO(rsc): Remove manual inlining of IsNaN, IsInf - // when compiler does it for us // special cases switch { - case x == 0 || x != x: // x == 0 || IsNaN(): + case x == 0 || IsNaN(x): return x // return ±0 || NaN() - case x < -MaxFloat64 || x > MaxFloat64: // IsInf(x, 0): + case IsInf(x, 0): return NaN() } |