gcc/signbit.go at c4d9f41936d0060b79c48325f6098cd9ac5ac29d - gcc - ClassFun

mirrors/gcc

mirror of https://gcc.gnu.org/git/gcc.git synced 2024-12-18 16:44:57 +08:00

Ian Lance Taylor 7a9389330e 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

2010-12-03 04:34:57 +00:00

11 lines

302 B

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 // 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
 // Signbit returns true if x is negative or negative zero.
 func Signbit(x float64) bool {
 	return Float64bits(x)&(1<<63) != 0
 }