diff options
Diffstat (limited to 'src/pkg/math/acosh.go')
| -rw-r--r-- | src/pkg/math/acosh.go | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/pkg/math/acosh.go b/src/pkg/math/acosh.go index 7e8740b89..c6c8645e1 100644 --- a/src/pkg/math/acosh.go +++ b/src/pkg/math/acosh.go @@ -36,6 +36,7 @@ package math // Acosh(x) calculates the inverse hyperbolic cosine of x. // // Special cases are: +// Acosh(+Inf) = +Inf // Acosh(x) = NaN if x < 1 // Acosh(NaN) = NaN func Acosh(x float64) float64 { @@ -43,11 +44,9 @@ func Acosh(x float64) float64 { Ln2 = 6.93147180559945286227e-01 // 0x3FE62E42FEFA39EF Large = 1 << 28 // 2**28 ) - // TODO(rsc): Remove manual inlining of IsNaN - // when compiler does it for us // first case is special case switch { - case x < 1 || x != x: // x < 1 || IsNaN(x): + case x < 1 || IsNaN(x): return NaN() case x == 1: return 0 |