1 files changed, 0 insertions, 69 deletions
diff --git a/src/pkg/math/asinh.go b/src/pkg/math/asinh.go
deleted file mode 100644
index ff2de0215..000000000
--- a/src/pkg/math/asinh.go
+++ /dev/null
@@ -1,69 +0,0 @@
-// Copyright 2010 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
-
-// The original C code, the long comment, and the constants
-// below are from FreeBSD's /usr/src/lib/msun/src/s_asinh.c
-// and came with this notice.  The go code is a simplified
-// version of the original C.
-//
-// ====================================================
-// Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
-//
-// Developed at SunPro, a Sun Microsystems, Inc. business.
-// Permission to use, copy, modify, and distribute this
-// software is freely granted, provided that this notice
-// is preserved.
-// ====================================================
-//
-//
-// asinh(x)
-// Method :
-//	Based on
-//	        asinh(x) = sign(x) * log [ |x| + sqrt(x*x+1) ]
-//	we have
-//	asinh(x) := x  if  1+x*x=1,
-//	         := sign(x)*(log(x)+ln2)) for large |x|, else
-//	         := sign(x)*log(2|x|+1/(|x|+sqrt(x*x+1))) if|x|>2, else
-//	         := sign(x)*log1p(|x| + x**2/(1 + sqrt(1+x**2)))
-//
-
-// Asinh returns the inverse hyperbolic sine of x.
-//
-// Special cases are:
-//	Asinh(±0) = ±0
-//	Asinh(±Inf) = ±Inf
-//	Asinh(NaN) = NaN
-func Asinh(x float64) float64 {
-	const (
-		Ln2      = 6.93147180559945286227e-01 // 0x3FE62E42FEFA39EF
-		NearZero = 1.0 / (1 << 28)            // 2**-28
-		Large    = 1 << 28                    // 2**28
-	)
-	// special cases
-	if IsNaN(x) || IsInf(x, 0) {
-		return x
-	}
-	sign := false
-	if x < 0 {
-		x = -x
-		sign = true
-	}
-	var temp float64
-	switch {
-	case x > Large:
-		temp = Log(x) + Ln2 // |x| > 2**28
-	case x > 2:
-		temp = Log(2*x + 1/(Sqrt(x*x+1)+x)) // 2**28 > |x| > 2.0
-	case x < NearZero:
-		temp = x // |x| < 2**-28
-	default:
-		temp = Log1p(x + x*x/(1+Sqrt(1+x*x))) // 2.0 > |x| > 2**-28
-	}
-	if sign {
-		temp = -temp
-	}
-	return temp
-}