Hulk did something

[bytom/vapor.git] / vendor / gonum.org / v1 / gonum / internal / math32 / sqrt.go

diff --git a/vendor/gonum.org/v1/gonum/internal/math32/sqrt.go b/vendor/gonum.org/v1/gonum/internal/math32/sqrt.go
new file mode 100644 (file)
index 0000000..ba4747a
--- /dev/null
+++ b/vendor/gonum.org/v1/gonum/internal/math32/sqrt.go
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+// Copyright ©2015 The Gonum Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//+build !amd64 noasm appengine
+
+package math32
+
+import (
+       "math"
+)
+
+// Sqrt returns the square root of x.
+//
+// Special cases are:
+//     Sqrt(+Inf) = +Inf
+//     Sqrt(±0) = ±0
+//     Sqrt(x < 0) = NaN
+//     Sqrt(NaN) = NaN
+func Sqrt(x float32) float32 {
+       // FIXME(kortschak): Direct translation of the math package
+       // asm code for 386 fails to build. No test hardware is available
+       // for arm, so using conversion instead.
+       return float32(math.Sqrt(float64(x)))
+}