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author | das <das@FreeBSD.org> | 2004-07-18 21:23:39 +0000 |
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committer | das <das@FreeBSD.org> | 2004-07-18 21:23:39 +0000 |
commit | 1a69fc33708b18800fc764be0248de78b4bc35c0 (patch) | |
tree | eb35ae876a43222fec2d90dbf20674666f760ca7 /lib/libc/amd64 | |
parent | 8fe12ef8db88fe5b261b6c7b14bbc330def59245 (diff) | |
download | FreeBSD-src-1a69fc33708b18800fc764be0248de78b4bc35c0.zip FreeBSD-src-1a69fc33708b18800fc764be0248de78b4bc35c0.tar.gz |
Replace seven nominally MD implementations of frexp() that are broken
for subnormals with one implementation that works.
Diffstat (limited to 'lib/libc/amd64')
-rw-r--r-- | lib/libc/amd64/gen/Makefile.inc | 3 | ||||
-rw-r--r-- | lib/libc/amd64/gen/frexp.c | 67 |
2 files changed, 1 insertions, 69 deletions
diff --git a/lib/libc/amd64/gen/Makefile.inc b/lib/libc/amd64/gen/Makefile.inc index 2caa178..9f559e6 100644 --- a/lib/libc/amd64/gen/Makefile.inc +++ b/lib/libc/amd64/gen/Makefile.inc @@ -3,7 +3,6 @@ SRCS+= _setjmp.S rfork_thread.S setjmp.S sigsetjmp.S \ fabs.S modf.S \ - frexp.c infinity.c ldexp.c \ - makecontext.c signalcontext.c \ + infinity.c ldexp.c makecontext.c signalcontext.c \ fpgetmask.c fpsetmask.c fpgetprec.c fpsetprec.c \ fpgetround.c fpsetround.c fpgetsticky.c fpsetsticky.c diff --git a/lib/libc/amd64/gen/frexp.c b/lib/libc/amd64/gen/frexp.c deleted file mode 100644 index 37f6a57..0000000 --- a/lib/libc/amd64/gen/frexp.c +++ /dev/null @@ -1,67 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if defined(LIBC_SCCS) && !defined(lint) -static char sccsid[] = "@(#)frexp.c 8.1 (Berkeley) 6/4/93"; -#endif /* LIBC_SCCS and not lint */ -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/types.h> -#include <math.h> - -double -frexp(value, eptr) - double value; - int *eptr; -{ - union { - double v; - struct { - u_int u_mant2 : 32; - u_int u_mant1 : 20; - u_int u_exp : 11; - u_int u_sign : 1; - } s; - } u; - - if (value) { - u.v = value; - *eptr = u.s.u_exp - 1022; - u.s.u_exp = 1022; - return(u.v); - } else { - *eptr = 0; - return((double)0); - } -} |