1 files changed, 52 insertions, 0 deletions
diff --git a/src/pkg/math/runtime.go b/src/pkg/math/runtime.go
new file mode 100644
index 000000000..69d333825
--- /dev/null
+++ b/src/pkg/math/runtime.go
@@ -0,0 +1,52 @@
+// 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
+
+// implemented in C, in ../../runtime
+// perhaps one day the implementations will move here.
+
+// Float32bits returns the IEEE 754 binary representation of f.
+func Float32bits(f float32) (b uint32)
+
+// Float32frombits returns the floating point number corresponding
+// to the IEEE 754 binary representation b.
+func Float32frombits(b uint32) (f float32)
+
+// Float64bits returns the IEEE 754 binary representation of f.
+func Float64bits(f float64) (b uint64)
+
+// Float64frombits returns the floating point number corresponding
+// the IEEE 754 binary representation b.
+func Float64frombits(b uint64) (f float64)
+
+// Frexp breaks f into a normalized fraction
+// and an integral power of two.
+// It returns frac and exp satisfying f == frac × 2<sup>exp</sup>,
+// with the absolute value of frac in the interval [½, 1).
+func Frexp(f float64) (frac float64, exp int)
+
+// Inf returns positive infinity if sign >= 0, negative infinity if sign < 0.
+func Inf(sign int32) (f float64)
+
+// IsInf returns whether f is an infinity, according to sign.
+// If sign > 0, IsInf returns whether f is positive infinity.
+// If sign < 0, IsInf returns whether f is negative infinity.
+// If sign == 0, IsInf returns whether f is either infinity.
+func IsInf(f float64, sign int) (is bool)
+
+// IsNaN returns whether f is an IEEE 754 ``not-a-number'' value.
+func IsNaN(f float64) (is bool)
+
+// Ldexp is the inverse of Frexp.
+// It returns frac × 2<sup>exp</sup>.
+func Ldexp(frac float64, exp int) (f float64)
+
+// Modf returns integer and fractional floating-point numbers
+// that sum to f.
+// Integer and frac have the same sign as f.
+func Modf(f float64) (integer float64, frac float64)
+
+// NaN returns an IEEE 754 ``not-a-number'' value.
+func NaN() (f float64)