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7176f4e4b5
* stdlib/stdlib.h: Replace __CONSTVALUE by attribute. * stdlib/abs.c, stdlib/div.c, stdlib/labs.c, stdlib/ldiv.c, sysdeps/generic/hypot.c: Remove obsolete __CONSTVALUE. * stdio-common/printf_fp.c (__printf_fp): Fix parameter declaration. * sysdeps/generic/putenv.c (putenv): Fix second argument of setenv. * sysdeps/ieee754/hypot.c: New file, extracted out of cabs.c. * sysdeps/ieee754/cabs.c: Don't define hypot here. * sysdeps/ieee754/ieee754.h (union ieee854_long_double): Fix definition of ieee_nan alternative. * sysdeps/m68k/__longjmp.c, sysdeps/m68k/setjmp.c: Add register prefix spec. * sysdeps/m68k/ffs.c (ffs): Fix register constraint. * sysdeps/m68k/fpu/__math.h: Include <errno.h>. Replace obsolete __CONSTVALUE by attribute. (floor): Round to negative infinity. (rint, expm1) [__NO_MATH_INLINES]: Don't define, to avoid type clash when compiling source. (pow): Handle x == 0 and x < 0. (ceil, __isinf, __isnan): Fix register constraints. (__isinfl, __isnanl): Added. * sysdeps/m68k/fpu/acos.c, sysdeps/m68k/fpu/atan2.c, sysdeps/m68k/fpu/fmod.c, sysdeps/m68k/fpu/ldexp.c, sysdeps/m68k/fpu/pow.c: Remove obsolete __CONSTVALUE. * sysdeps/m68k/bsd-_setjmp.S, sysdeps/m68k/bsd-setjmp.S: Fix assembler syntax. * sysdeps/unix/bsd/bsd4.4/fchdir.S (fchdir): Take only one argument. * sysdeps/unix/bsd/clock.c (timeval_to_clock_t): Fix timeval to clock_t conversion. (clock): Don't multiply by CLOCKS_PER_SEC. * sysdeps/unix/bsd/poll.c (poll): Fix msec to timeval conversion. * sysdeps/unix/bsd/sun/m68k/brk.S (brk): Compare with address of __end. * sysdeps/unix/bsd/sun/m68k/vfork.S: Fix assembler syntax. * sysdeps/unix/bsd/ualarm.c (ualarm): Fix timeval calculation. * sysdeps/unix/bsd/vax/vfork.S: Remove duplicate label.
92 lines
3.9 KiB
C
92 lines
3.9 KiB
C
/* Copyright (C) 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/*
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* Copyright (c) 1990 Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <ansidecl.h>
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#include <stdlib.h>
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/* Return the `div_t' representation of NUMER over DENOM. */
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div_t
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DEFUN(div, (numer, denom), int numer AND int denom)
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{
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div_t result;
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result.quot = numer / denom;
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result.rem = numer % denom;
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/* The ANSI standard says that |QUOT| <= |NUMER / DENOM|, where
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NUMER / DENOM is to be computed in infinite precision. In
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other words, we should always truncate the quotient towards
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zero, never -infinity. Machine division and remainer may
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work either way when one or both of NUMER or DENOM is
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negative. If only one is negative and QUOT has been
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truncated towards -infinity, REM will have the same sign as
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DENOM and the opposite sign of NUMER; if both are negative
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and QUOT has been truncated towards -infinity, REM will be
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positive (will have the opposite sign of NUMER). These are
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considered `wrong'. If both are NUM and DENOM are positive,
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RESULT will always be positive. This all boils down to: if
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NUMER >= 0, but REM < 0, we got the wrong answer. In that
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case, to get the right answer, add 1 to QUOT and subtract
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DENOM from REM. */
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if (numer >= 0 && result.rem < 0)
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{
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++result.quot;
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result.rem -= denom;
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}
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return result;
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}
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