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b4012b7542
1997-04-21 13:25 Ulrich Drepper <drepper@cygnus.com>
* manual/arith.texi: Add description for INFINITY, _Imaginary_I,
fpclassify & friends, and complex number operations.
Update various other math functions for ISO C 9X.
* manual/math.texi: Update various entries for ISO C 9X.
Add description for complex number functions.
Add description of rand48 function family.
* manual/string.h: Add description of a64l and l64a.
* math/cmathcalls.h: Fix typo.
* stdlib/a64l.c: Pretty printing.
* stdlib/seed48_r.c: Also reset `a' and `c' to default values.
* stdlib/srand48_r.c: Likewise.
* stdlib/stdlib.h: Pretty printing.
* sysdeps/i386/fpu/__math.h: Fix typo.
* sysdeps/libm-ieee754/s_nearbyintf.c: Correctly name function.
* sysdeps/libm-ieee754/s_nearbyintl.c: Likewise.
1997-04-19 22:16 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/e_pow.c: Rewrite handling of integral exponent.
1997-04-18 19:34 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h: Define optimized versions of
isgreater, isgreaterequal, isless, islessequal, islessgreater, and
isunordered.
1997-04-20 01:28 Richard Henderson <rth@tamu.edu>
* rellns-sh: Handle files in the same directory correctly.
1997-04-20 11:22 Ulrich Drepper <drepper@cygnus.com>
* csu/initfini.c: Place ALIGN instruction at correct positions.
Patch by Richard Henderson <richard@twiddle.rth.home>.
1997-04-19 17:12 Ulrich Drepper <drepper@cygnus.com>
* Make-dist: Don't automatically ignore .c files if the .S or .s file
is ignored.
* csu/Makefile (distribute): Add defs.awk.
1997-04-19 15:39 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/stub/shmat.c: Update to XPG4.2 interface.
* sysdeps/stub/shmdt.c: Likewise.
Reported by Thomas Bushnell, n/BSG.
1997-04-19 13:22 Ulrich Drepper <drepper@cygnus.com>
* manual/stdio.texi: Add description of printf_size and
printf_size_info. Partly based on the documentation by Larry McVoy.
1997-04-19 02:21 Ulrich Drepper <drepper@cygnus.com>
* stdio-common/printf_size.c (printf_size): Correct values for
`units'.
Report by Larry McVoy <lm@neteng.engr.sgi.com>.
* stdio-common/tst-printfsz.c: New file.
* stdio-common/Makefile (tests): Add tst-printfsz.c.
(CFLAGS-tst-printfsz.c): Define to prevent warnings about format
strings.
1997-04-18 15:48 Ulrich Drepper <drepper@cygnus.com>
* login/utmp.h: Add prototype for updwtmp.
* login/logwtmp.c: Add new function updwtmp which allows to write
a complete record to the wtmp file.
Patch by Miquel van Smoorenburg <miquels@cistron.nl>.
1997-04-17 17:57 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* math/Makefile (headers): Add mathbits.h.
1997-04-16 21:20 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/fpu/__math.h: Add inlined sincos{,l,f}.
* sysdeps/m68k/fpu/s_sincos.c: New file.
* sysdeps/m68k/fpu/s_sincosf.c: New file.
* sysdeps/m68k/fpu/s_sincosl.c: New file.
* sysdeps/libm-ieee754/e_scalb.c: Use internal names of the
functions.
* sysdeps/libm-ieee754/e_scalbl.c: Likewise.
* sysdeps/libm-ieee754/s_ctanh.c: Use isfinite instead of finite.
* sysdeps/libm-ieee754/s_ctanhf.c: Likewise.
* sysdeps/libm-ieee754/s_ctanhl.c: Likewise.
* sysdeps/libm-ieee754/s_ctan.c: Likewise.
* sysdeps/libm-ieee754/s_ctanf.c: Likewise.
* sysdeps/libm-ieee754/s_ctanl.c: Likewise. Fix type of `res'.
1997-04-18 11:21 Ulrich Drepper <drepper@cygnus.com>
* shadow/fgetspent_r.c: Set *RESULT to NULL before returning error.
Patch by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>.
78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
/* s_rintf.c -- float version of s_rint.c.
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* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
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*/
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/* Adapted for use as nearbyint by Ulrich Drepper <drepper@cygnus.com>. */
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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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#include <fenv.h>
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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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static const float
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#else
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static float
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#endif
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TWO23[2]={
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8.3886080000e+06, /* 0x4b000000 */
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-8.3886080000e+06, /* 0xcb000000 */
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};
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#ifdef __STDC__
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float __nearbyintf(float x)
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#else
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float __nearbyintf(x)
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float x;
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#endif
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{
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fenv_t env;
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int32_t i0,j0,sx;
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u_int32_t i,i1;
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float w,t;
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GET_FLOAT_WORD(i0,x);
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sx = (i0>>31)&1;
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j0 = ((i0>>23)&0xff)-0x7f;
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if(j0<23) {
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if(j0<0) {
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if((i0&0x7fffffff)==0) return x;
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i1 = (i0&0x07fffff);
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i0 &= 0xfff00000;
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i0 |= ((i1|-i1)>>9)&0x400000;
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SET_FLOAT_WORD(x,i0);
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feholdexcept (&env);
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w = TWO23[sx]+x;
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t = w-TWO23[sx];
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fesetenv (&env);
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GET_FLOAT_WORD(i0,t);
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SET_FLOAT_WORD(t,(i0&0x7fffffff)|(sx<<31));
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return t;
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} else {
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i = (0x007fffff)>>j0;
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if((i0&i)==0) return x; /* x is integral */
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i>>=1;
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if((i0&i)!=0) i0 = (i0&(~i))|((0x100000)>>j0);
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}
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} else {
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if(j0==0x80) return x+x; /* inf or NaN */
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else return x; /* x is integral */
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}
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SET_FLOAT_WORD(x,i0);
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feholdexcept (&env);
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w = TWO23[sx]+x;
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t = w-TWO23[sx];
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fesetenv (&env);
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return t;
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}
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weak_alias (__nearbyintf, nearbyintf)
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