From 7a9389330e91acc3ed05deac2d198af25d13cf3c Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Fri, 3 Dec 2010 04:34:57 +0000 Subject: Add Go frontend, libgo library, and Go testsuite. gcc/: * gcc.c (default_compilers): Add entry for ".go". * common.opt: Add -static-libgo as a driver option. * doc/install.texi (Configuration): Mention libgo as an option for --enable-shared. Mention go as an option for --enable-languages. * doc/invoke.texi (Overall Options): Mention .go as a file name suffix. Mention go as a -x option. * doc/frontends.texi (G++ and GCC): Mention Go as a supported language. * doc/sourcebuild.texi (Top Level): Mention libgo. * doc/standards.texi (Standards): Add section on Go language. Move references for other languages into their own section. * doc/contrib.texi (Contributors): Mention that I contributed the Go frontend. gcc/testsuite/: * lib/go.exp: New file. * lib/go-dg.exp: New file. * lib/go-torture.exp: New file. * lib/target-supports.exp (check_compile): Match // Go. From-SVN: r167407 --- libgo/go/math/unsafe.go | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 libgo/go/math/unsafe.go (limited to 'libgo/go/math/unsafe.go') diff --git a/libgo/go/math/unsafe.go b/libgo/go/math/unsafe.go new file mode 100644 index 0000000..5ae6742 --- /dev/null +++ b/libgo/go/math/unsafe.go @@ -0,0 +1,21 @@ +// 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 + +import "unsafe" + +// Float32bits returns the IEEE 754 binary representation of f. +func Float32bits(f float32) uint32 { return *(*uint32)(unsafe.Pointer(&f)) } + +// Float32frombits returns the floating point number corresponding +// to the IEEE 754 binary representation b. +func Float32frombits(b uint32) float32 { return *(*float32)(unsafe.Pointer(&b)) } + +// Float64bits returns the IEEE 754 binary representation of f. +func Float64bits(f float64) uint64 { return *(*uint64)(unsafe.Pointer(&f)) } + +// Float64frombits returns the floating point number corresponding +// the IEEE 754 binary representation b. +func Float64frombits(b uint64) float64 { return *(*float64)(unsafe.Pointer(&b)) } -- cgit v1.1