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* locale/categories.def: Change type of _NL_CTYPE_CLASS_NAMES and _NL_CTYPE_MAP_NAMES field to stringlist. Change name of _NL_CTYPE_CODESET_NAME to "charmap". * locale/localeinfo.h (enum value_type): Add stringlist. * locale/programs/locale.c (show_info): Handle stringlist. * locale/programs/charmap.c (charmap_read): If charmap file is not using the given name try to find it by looking through all available charmap files and compare the code set name. * locale/programs/locale.c (write_charmaps): Also print names of charset in <code_set_name> fields in the files. * elf/ldd.bash.in: Correct translatable strings. * posix/TESTS: Add some more tests for character class matching. * posix/regex.c: Merge with GNU awk version. (regex_compile): Use ISO C/amend 1 functions for character class handling. * posix/regex.h: Merge with GNU awk version. * posix/getopt.c: Declare as master copies. * posix/getopt1.c: Likewise. * posix/getopt.h: Likewise. * sysdeps/unix/sysv/linux/sys/mount.h: Add definitions for option value to mount functions. Patch by a sun <asun@zoology.washington.edu>. * stdio-common/bug4.c (main): Use /tmp/bug4.test for concurrency with other tests. * sunrpc/svc_run.c (svc_exit): New, defined. (svc_run): Test for svc_stop variable. * sysdeps/m68k/s_cexp.c: Rewritten. * sysdeps/m68k/s_cexpf.c: Likewise. * sysdeps/m68k/s_cexpl.c: Likewise.
80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/* s_atanhl.c -- long double version of s_atan.c.
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* Conversion to long double by Ulrich Drepper,
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* Cygnus Support, drepper@cygnus.com.
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*/
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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: $";
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#endif
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/* __ieee754_atanhl(x)
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* Method :
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* 1.Reduced x to positive by atanh(-x) = -atanh(x)
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* 2.For x>=0.5
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* 1 2x x
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* atanhl(x) = --- * log(1 + -------) = 0.5 * log1p(2 * --------)
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* 2 1 - x 1 - x
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*
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* For x<0.5
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* atanhl(x) = 0.5*log1pl(2x+2x*x/(1-x))
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*
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* Special cases:
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* atanhl(x) is NaN if |x| > 1 with signal;
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* atanhl(NaN) is that NaN with no signal;
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* atanhl(+-1) is +-INF with signal.
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*
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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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static const long double one = 1.0, huge = 1e4900L;
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#else
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static long double one = 1.0, huge = 1e4900L;
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#endif
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#ifdef __STDC__
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static const long double zero = 0.0;
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#else
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static double long zero = 0.0;
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#endif
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#ifdef __STDC__
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long double __ieee754_atanhl(long double x)
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#else
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long double __ieee754_atanhl(x)
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long double x;
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#endif
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{
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long double t;
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int32_t ix;
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u_int32_t se,i0,i1;
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GET_LDOUBLE_WORDS(se,i0,i1,x);
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ix = se&0x7fff;
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if ((ix+((((i0&0x7fffffff)|i1)|(-((i0&0x7fffffff)|i1)))>>31))>0x3fff)
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/* |x|>1 */
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return (x-x)/(x-x);
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if(ix==0x3fff)
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return x/zero;
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if(ix<0x3fe3&&(huge+x)>zero) return x; /* x<2**-28 */
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SET_LDOUBLE_EXP(x,ix);
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if(ix<0x3ffe) { /* x < 0.5 */
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t = x+x;
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t = 0.5*__log1pl(t+t*x/(one-x));
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} else
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t = 0.5*__log1pl((x+x)/(one-x));
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if(se<=0x7fff) return t; else return -t;
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}
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