mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-20 01:40:26 +00:00
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.
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#include <math.h>
|
|
|
|
#ifdef __GNUC__
|
|
|
|
double
|
|
DEFUN(atan2, (y, x), double y AND double x)
|
|
{
|
|
static CONST double one = 1.0, zero = 0.0;
|
|
double signx, signy;
|
|
double pi, PIo4, PIo2;
|
|
|
|
if (__isnan(x))
|
|
return x;
|
|
if (__isnan(y))
|
|
return y;
|
|
|
|
signy = __copysign(one, y);
|
|
signx = __copysign(one, x);
|
|
|
|
asm("fmovecr%.x %1, %0" : "=f" (pi) : "i" (0));
|
|
PIo2 = pi / 2;
|
|
PIo4 = pi / 4;
|
|
|
|
if (y == zero)
|
|
return signx == one ? y : __copysign(pi, signy);
|
|
|
|
if (x == zero)
|
|
return __copysign(PIo2, signy);
|
|
|
|
if (__isinf(x))
|
|
{
|
|
if (__isinf(y))
|
|
return __copysign(signx == one ? PIo4 : 3 * PIo4, signy);
|
|
else
|
|
return __copysign(signx == one ? zero : pi, signy);
|
|
}
|
|
|
|
if (__isinf(y))
|
|
return __copysign(PIo2, signy);
|
|
|
|
y = fabs(y);
|
|
|
|
if (x < 0.0)
|
|
/* X is negative. */
|
|
return __copysign(pi - atan(y / -x), signy);
|
|
|
|
return __copysign(atan(y / x), signy);
|
|
}
|
|
|
|
#else
|
|
#include <sysdeps/generic/atan2.c>
|
|
#endif
|