267ca16a67
Sat Aug 10 13:17:27 1996 David Mosberger-Tang <davidm@azstarnet.com> * shadow.h: New file. * sysdeps/unix/sysv/linux/netinet/in.h: Move __BEGIN_DECLS/__END_DECLS up so ntohl() et al are bracketed as well. * socket/sys/socket.h [__cplusplus]: Use old-style __SOCKADDR_ARG. g++ 2.7.2 (and earlier) has no transparent unions support. Fri Aug 9 18:50:06 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/alpha/ioperm.c (_bus_base_sparse): New function to determine the base address of sparse bus memory. (APECS_*): Rename to CIA_*. (APECS_SPARSE_MEM, CIA_SPARSE_MEM): New macros. (platform): Add sparse_bus_memory_base member and initialize. (sparse_bus_memory_base): New variable. Tue Aug 6 10:23:18 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/posix/ttyname_r.c (ttyname_r), sysdeps/posix/ttyname.c (ttyname): Return -1/NULL if !__isatty(fd) (POSIX.1 says so.) * sysdeps/unix/getlogin.c (getlogin): Fix to check fd 0 only. This is not a gross hack, after all---for compatibility, getlogin() really should check fd 0 only and not try to base its operation on the controlling tty. Wed Jul 17 10:54:20 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/getlogin.c (getlogin): Add static variable NAME, change utmp_data from static to auto. Sun Aug 11 02:56:08 1996 Ulrich Drepper <drepper@cygnus.com> * posix/unistd.h [__USE_MISC]: Add prototype for `nice'. Reported by David Mosberger-Tang.
44 lines
1,011 B
C
44 lines
1,011 B
C
/* @(#)s_isnan.c 5.1 93/09/24 */
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/*
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* ====================================================
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* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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*
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* Developed at SunPro, a Sun Microsystems, Inc. business.
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* Permission to use, copy, modify, and distribute this
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* software is freely granted, provided that this notice
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* is preserved.
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* ====================================================
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*/
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#if defined(LIBM_SCCS) && !defined(lint)
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static char rcsid[] = "$NetBSD: s_isnan.c,v 1.8 1995/05/10 20:47:36 jtc Exp $";
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#endif
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/*
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* isnan(x) returns 1 is x is nan, else 0;
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* no branching!
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*/
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#include "math.h"
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#include "math_private.h"
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#ifdef __STDC__
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int __isnan(double x)
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#else
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int __isnan(x)
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double x;
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#endif
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{
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int32_t hx,lx;
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EXTRACT_WORDS(hx,lx,x);
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hx &= 0x7fffffff;
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hx |= (u_int32_t)(lx|(-lx))>>31;
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hx = 0x7ff00000 - hx;
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return (int)((u_int32_t)(hx))>>31;
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}
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weak_alias (__isnan, isnan)
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#ifdef NO_LONG_DOUBLE
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strong_alias (__isnan, __isnanl)
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weak_alias (__isnan, isnanl)
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#endif
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