Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 45 deletions

diff --git a/src/pkg/math/ldexp.go b/src/pkg/math/ldexp.go
deleted file mode 100644
index b5d2a5e7e..000000000
--- a/src/pkg/math/ldexp.go
+++ /dev/null
@@ -1,45 +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
-
-// Ldexp is the inverse of Frexp.
-// It returns frac × 2**exp.
-//
-// Special cases are:
-//	Ldexp(±0, exp) = ±0
-//	Ldexp(±Inf, exp) = ±Inf
-//	Ldexp(NaN, exp) = NaN
-func Ldexp(frac float64, exp int) float64
-
-func ldexp(frac float64, exp int) float64 {
-	// special cases
-	switch {
-	case frac == 0:
-		return frac // correctly return -0
-	case IsInf(frac, 0) || IsNaN(frac):
-		return frac
-	}
-	frac, e := normalize(frac)
-	exp += e
-	x := Float64bits(frac)
-	exp += int(x>>shift)&mask - bias
-	if exp < -1074 {
-		return Copysign(0, frac) // underflow
-	}
-	if exp > 1023 { // overflow
-		if frac < 0 {
-			return Inf(-1)
-		}
-		return Inf(1)
-	}
-	var m float64 = 1
-	if exp < -1022 { // denormal
-		exp += 52
-		m = 1.0 / (1 << 52) // 2**-52
-	}
-	x &^= mask << shift
-	x |= uint64(exp+bias) << shift
-	return m * Float64frombits(x)
-}