Imported Upstream version 60

1 files changed, 0 insertions, 66 deletions

diff --git a/src/pkg/math/sin.go b/src/pkg/math/sin.go
deleted file mode 100644
index 35220cb3e..000000000
--- a/src/pkg/math/sin.go
+++ /dev/null
@@ -1,66 +0,0 @@
-// 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
-
-
-/*
-	Floating-point sine and cosine.
-
-	Coefficients are #5077 from Hart & Cheney. (18.80D)
-*/
-
-func sinus(x float64, quad int) float64 {
-	const (
-		P0 = .1357884097877375669092680e8
-		P1 = -.4942908100902844161158627e7
-		P2 = .4401030535375266501944918e6
-		P3 = -.1384727249982452873054457e5
-		P4 = .1459688406665768722226959e3
-		Q0 = .8644558652922534429915149e7
-		Q1 = .4081792252343299749395779e6
-		Q2 = .9463096101538208180571257e4
-		Q3 = .1326534908786136358911494e3
-	)
-	if x < 0 {
-		x = -x
-		quad = quad + 2
-	}
-	x = x * (2 / Pi) /* underflow? */
-	var y float64
-	if x > 32764 {
-		var e float64
-		e, y = Modf(x)
-		e = e + float64(quad)
-		f, _ := Modf(0.25 * e)
-		quad = int(e - 4*f)
-	} else {
-		k := int32(x)
-		y = x - float64(k)
-		quad = (quad + int(k)) & 3
-	}
-
-	if quad&1 != 0 {
-		y = 1 - y
-	}
-	if quad > 1 {
-		y = -y
-	}
-
-	yy := y * y
-	temp1 := ((((P4*yy+P3)*yy+P2)*yy+P1)*yy + P0) * y
-	temp2 := ((((yy+Q3)*yy+Q2)*yy+Q1)*yy + Q0)
-	return temp1 / temp2
-}
-
-// Cos returns the cosine of x.
-func Cos(x float64) float64 {
-	if x < 0 {
-		x = -x
-	}
-	return sinus(x, 1)
-}
-
-// Sin returns the sine of x.
-func Sin(x float64) float64 { return sinus(x, 0) }