1 files changed, 15 insertions, 0 deletions
diff --git a/src/math/abs.go b/src/math/abs.go
new file mode 100644
index 0000000..08be145
--- /dev/null
+++ b/src/math/abs.go
@@ -0,0 +1,15 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package math
+
+// Abs returns the absolute value of x.
+//
+// Special cases are:
+//
+//	Abs(±Inf) = +Inf
+//	Abs(NaN) = NaN
+func Abs(x float64) float64 {
+	return Float64frombits(Float64bits(x) &^ (1 << 63))
+}