Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 50 deletions

diff --git a/src/pkg/math/logb.go b/src/pkg/math/logb.go
deleted file mode 100644
index f2769d4fd..000000000
--- a/src/pkg/math/logb.go
+++ /dev/null
@@ -1,50 +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
-
-// Logb returns the binary exponent of x.
-//
-// Special cases are:
-//	Logb(±Inf) = +Inf
-//	Logb(0) = -Inf
-//	Logb(NaN) = NaN
-func Logb(x float64) float64 {
-	// special cases
-	switch {
-	case x == 0:
-		return Inf(-1)
-	case IsInf(x, 0):
-		return Inf(1)
-	case IsNaN(x):
-		return x
-	}
-	return float64(ilogb(x))
-}
-
-// Ilogb returns the binary exponent of x as an integer.
-//
-// Special cases are:
-//	Ilogb(±Inf) = MaxInt32
-//	Ilogb(0) = MinInt32
-//	Ilogb(NaN) = MaxInt32
-func Ilogb(x float64) int {
-	// special cases
-	switch {
-	case x == 0:
-		return MinInt32
-	case IsNaN(x):
-		return MaxInt32
-	case IsInf(x, 0):
-		return MaxInt32
-	}
-	return ilogb(x)
-}
-
-// logb returns the binary exponent of x. It assumes x is finite and
-// non-zero.
-func ilogb(x float64) int {
-	x, exp := normalize(x)
-	return int((Float64bits(x)>>shift)&mask) - bias + exp
-}