Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 59 deletions

diff --git a/src/pkg/math/bits.go b/src/pkg/math/bits.go
deleted file mode 100644
index d85ee9cb1..000000000
--- a/src/pkg/math/bits.go
+++ /dev/null
@@ -1,59 +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
-
-const (
-	uvnan    = 0x7FF8000000000001
-	uvinf    = 0x7FF0000000000000
-	uvneginf = 0xFFF0000000000000
-	mask     = 0x7FF
-	shift    = 64 - 11 - 1
-	bias     = 1023
-)
-
-// Inf returns positive infinity if sign >= 0, negative infinity if sign < 0.
-func Inf(sign int) float64 {
-	var v uint64
-	if sign >= 0 {
-		v = uvinf
-	} else {
-		v = uvneginf
-	}
-	return Float64frombits(v)
-}
-
-// NaN returns an IEEE 754 ``not-a-number'' value.
-func NaN() float64 { return Float64frombits(uvnan) }
-
-// IsNaN reports whether f is an IEEE 754 ``not-a-number'' value.
-func IsNaN(f float64) (is bool) {
-	// IEEE 754 says that only NaNs satisfy f != f.
-	// To avoid the floating-point hardware, could use:
-	//	x := Float64bits(f);
-	//	return uint32(x>>shift)&mask == mask && x != uvinf && x != uvneginf
-	return f != f
-}
-
-// IsInf reports whether f is an infinity, according to sign.
-// If sign > 0, IsInf reports whether f is positive infinity.
-// If sign < 0, IsInf reports whether f is negative infinity.
-// If sign == 0, IsInf reports whether f is either infinity.
-func IsInf(f float64, sign int) bool {
-	// Test for infinity by comparing against maximum float.
-	// To avoid the floating-point hardware, could use:
-	//	x := Float64bits(f);
-	//	return sign >= 0 && x == uvinf || sign <= 0 && x == uvneginf;
-	return sign >= 0 && f > MaxFloat64 || sign <= 0 && f < -MaxFloat64
-}
-
-// normalize returns a normal number y and exponent exp
-// satisfying x == y × 2**exp. It assumes x is finite and non-zero.
-func normalize(x float64) (y float64, exp int) {
-	const SmallestNormal = 2.2250738585072014e-308 // 2**-1022
-	if Abs(x) < SmallestNormal {
-		return x * (1 << 52), -52
-	}
-	return x, 0
-}