From 0d8733c4fc3695c7987548d10c344445f3eb552d Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Sun, 16 Mar 1997 20:28:07 +0000 Subject: Update. 1997-03-16 18:43 Ulrich Drepper * manual/filesys.texi: Add documentation for scandir and alphasort. * math/math.c (fpclassify): Correct stupid typos. * math/libm-test.c: New file. libm test suite by Andreas Jaeger. * nss/nss_files/files-hosts.c: Add gethostbyname2 imlementation. * posix/Makefile (routines): Add bsd-getpgrp. * posix/bsd-getpgrp.c: New file. * posix/unistd.h [__FAVOR_BSD]: Define macro getpgrp which maps calls to __bsd_getpgrp. * sysdeps/generic/getpgrp.c: De-ANSI-declfy. * sysdeps/i386/huge_val.h: New file. ix87 specific infinity values. * sysdeps/m68k/huge_val.h: New file. m68k specific infinity values. * sysdeps/generic/huge_val.h: Remove definition of long double definition. Make it the same as the double definition. * sysdeps/libm-i387/e_acos.S: Fix bug in FPU stack handling. * sysdeps/libm-i387/e_acosf.S: Likewise. * sysdeps/libm-i387/e_acosl.S: Likewise. * sysdeps/libm-i387/e_asin.S: Likewise. * sysdeps/libm-i387/e_asinf.S: Likewise. * sysdeps/libm-i387/e_asinl.S: Likewise. * sysdeps/libm-i387/e_exp.S: Likewise. * sysdeps/libm-i387/e_expf.S: Likewise. * sysdeps/libm-i387/e_expl.S: Likewise. * sysdeps/libm-i387/e_scalbn.S: Likewise. * sysdeps/libm-i387/e_scalbnf.S: Likewise. * sysdeps/libm-i387/e_scalbnl.S: Likewise. * sysdeps/libm-i387/e_log.S: Optimize branch code. * sysdeps/libm-i387/e_logf.S: Likewise. * sysdeps/libm-i387/e_logl.S: Likewise. * sysdeps/libm-i387/e_log10.S: Likewise. * sysdeps/libm-i387/e_log10f.S: Likewise. * sysdeps/libm-i387/e_log10l.S: Likewise. * sysdeps/libm-i387/e_pow.S: Major rewrite to handle special cases. * sysdeps/libm-i387/e_powf.S: Likewise. * sysdeps/libm-i387/e_powl.S: Likewise. * sysdeps/libm-i387/e_expm1.S: Change return value for -inf argument to -1.0. * sysdeps/libm-i387/e_expm1f.S: Likewise. * sysdeps/libm-i387/e_expm1l.S: Likewise. * sysdeps/libm-i387/e_isinfl.c: Return -1 for -inf. * sysdeps/libm-i387/e_logbl.S: Correct return value. Discard first stack element after fxtract. * sysdeps/libm-ieee754/e_atan2l.c: New file. `long double' implementation for atan2 function. * sysdeps/libm-ieee754/k_standard.c: Return NAN for libm not in _SVID_ mode when acos, asin, atan2, log, log10 is called with argument out of range. Add new error case for pow(+0,neg). * sysdeps/libm-ieee754/s_fpclassifyf.c: Correct recognition of NaN and +-inf. * sysdeps/libm-ieee754/s_fpclassifyl.c: Mask out explicit leading digit in stupid 80 bit formats. * sysdeps/libm-ieee754/s_isinf.c: Rewrite to return -1 for -inf. * sysdeps/libm-ieee754/s_isinff.c: Likewise. * sysdeps/libm-ieee754/s_isinfl.c: Likewise. * sysdeps/libm-ieee754/s_scalbnl.c (huge, tiny): Adapt values for long double type. * sysdeps/libm-ieee754/w_atan2.c: Do not raise exception expect when in SVID mode. * sysdeps/libm-ieee754/w_atan2f.c: Likewise. * sysdeps/libm-ieee754/w_atan2l.c: Likewise. * sysdeps/libm-ieee754/w_pow.c: Distinguish error cases for x is +0 or -0. * sysdeps/posix/isfdtype.c: Add cast to prevent warning. * sysdeps/stub/fcntlbits.h: Update copyright. * sysdeps/unix/bsd/fcntlbits.h: Likewise. * sysdeps/unix/bsd/bsd4.4/fcntlbits.h: Likewise. * sysdeps/unix/bsd/sun/sunos4/fcntlbits.h: Likewise. * sysdeps/unix/bsd/ultrix4/fcntlbits.h: Likewise. * sysdeps/unix/common/fcntlbits.h: Likewise. * sysdeps/unix/sysv/fcntlbits.h: Likewise. Define O_FSYNC as alias of O_SYNC. Add BSD compatibility macros FAPPEND, FFSYNC, FNONBLOCK, and FNDELAY. * sysdeps/unix/sysv/irix4/fcntlbits.h: Likewise. * sysdeps/unix/readdir_r.c: Don't copy whole `struct dirent' record, only reclen bytes. * sysdeps/unix/sysv/linux/fcntlbits.h [__USE_GNU]: Add O_READ, O_WRITE and O_NORW. * sysdeps/unix/sysv/linux/alpha/fcntlbits.h: Likewise. * sysdeps/unix/sysv/linux/init-first.h: Add copyright. * sysdeps/unix/sysv/linux/fxstat.c: New file. Rewrite kernel-level struct stat to user-level form. * sysdeps/unix/sysv/linux/lxstat: New file. * sysdeps/unix/sysv/linux/xstat: New file. * sysdeps/unix/sysv/linux/kernel_stat.h: Define struct stat used in kernel. * sysdeps/unix/sysv/linux/statbuf.h (struct stat): Change definition to use prescribed types for elements. (_STAT_VER): Change to value 3. * sysdeps/unix/sysv/linux/alph/statbuf.h: Likewise. * sysdeps/unix/sysv/linux/Dist: Add kernel_stat.h. * sysdeps/unix/sysv/linux/alpha/Dist: Likewise. * time/Makefile: Correct dependencies for test-tz. 1997-03-16 14:59 Philip Blundell * resolv/netdb.h: Add prototypes for gai_strerror and getnameinfo (needed for IPv6 basic sockets API). 1997-03-16 15:02 a sun * sysdeps/unix/sysv/linux/net/if_ppp.h: Don't use incompatible kernel header. * sysdeps/unix/sysv/linux/net/ppp_defs.h: Likewise. 1997-03-14 17:15 Ulrich Drepper * db/hash/hash_bigkey.c (__big_delete): Don't call __free_ovflpage without testing for last_bfp to be NULL. Reported by fabsoft@fabserver1.zarm.uni-bremen.de. 1997-03-13 11:42 Jim Meyering * time/mktime.c (TIME_T_MIN): Work around a bug in Cray C 5.0.3.0. 1997-03-14 04:00 Kurt Garloff * sysdeps/unix/sysv/linux/fcntlbits.h (O_FSYNC): Make alias for O_SYNC. (FASYNC): Move to __USE_BSD section. Create new macro O_ASYNC. 1997-03-14 02:50 Ulrich Drepper * nis/nss_nis/nis-hosts.c (_nss_nis_gethostbyname2_r): New functions. Compare result for correct address type. (_nss_nis_gethostbyname_r): Use _nss_nis_gethostbyname2_r. Reported by Mirko Streckenbach . 1997-02-17 01:40 Zlatko Calusic * time/strptime.c (recursive): Return rp to caller. (strptime_internal): First check for long names, then abbreviated (month & weekday). 1997-03-10 19:44 Andreas Schwab * Makeconfig: Remove useless definitions of ASFLAGS-%. * config.make.in (ASFLAGS-.so): Remove. * configure.in: Don't substitute ASFLAGS_SO. * sysdeps/sparc/configure.in: Remove file. * sysdeps/sparc/Makefile (ASFLAGS-.so): Define. 1997-03-11 17:00 Andreas Schwab * time/strptime.c (strptime_internal) [case 'Y']: Always subtract 1900 from year, regardless of century. 1997-03-12 05:43 Ulrich Drepper * stdlib/strtod.c (_tens_in_limb) [BITS_PER_MP_LIMB > 32]: Make all numbers unsigned to make buggy gccs happy. Patch by Bryan W. Headley . * sysdeps/unix/sysv/linux/netinet/ip.h: Add backward-compatibility definitions. Patch by a sun . Pretty print header. * Makerules (build-shlib): Also create symlink if library is versioned. based on a patch by H.J. Lu . Remove special rule to libc.so symlink. 1997-03-11 20:16 Andreas Jaeger * manual/math.texi (Domain and Range Errors): Change descriptions according to recent changes for ISO C 9X. 1997-03-11 22:39 Ulrich Drepper * sysdeps/libm-ieee754/k_standard.c (__kernel_standard): Correct return values for acos, asin, and atan2. Reported by Andreas Jaeger . 1997-03-10 18:16 Thorsten Kukuk * ypclnt.c (__yp_bind): Fix possible buffer overflow. 1997-03-10 18:06 Bernd Schmidt * dirent/alphasort.c (alphasort): Interpret arguments as pointers to pointers to directory entries so that alphasort really can be used as argument for scandir. 1997-03-09 23:33 Andreas Jaeger * string/strdup.c: Declare memcpy if !(_LIBC || STDC_HEADERS) instead of strcpy. 1997-03-10 03:34 Ulrich Drepper * catgets/catgets.c (catopen): Always add NLSPATH to search path for catalogs, not only if the envvar NLSPATH is not available. Reported by Andries.Brouwer@cwi.nl. 1997-03-10 02:46 Ulrich Drepper * Makeconfig (localtime-file): Don't define using installation directory. (inst_localtime-file): New variable. * time/Makefile (installed-localtime-file): Use inst_localtime-file. Reported by Edward Seidl . 1997-03-10 02:31 H.J. Lu * time/Makefile: Add source files to dependencies for test data. 1997-03-09 22:53 Thorsten Kukuk * nis/nss_nis/nis-ethers.c: Don't ignore return value of yp_all. * nis/nss_nis/nis-proto.c: Likewise. * nis/nss_nis/nis-rpc.c: Likewise. * nis/nss_nis/nis-service.c: Likewise. 1997-03-08 14:37 Miguel de Icaza * sysdeps/sparc/dl-machine.h (elf_machine_rela): Upgrade to versioning; Added missing R_SPARC_WDISP30 handling. (RTLD_START): Implement it. * sysdeps/unix/sysv/linux/sparc/brk.c: Fix. * sysdeps/unix/sysv/linux/sparc/start.c: Startup code for Linux/SPARC. 1997-03-02 18:06 Miguel de Icaza * sysdeps/sparc/dl-machine.h (RTLD_START): Make arg as expected by the dynamic linker instead of having a new conditional define. Thanks to Richard Henderson for pointing this out. * elf/rtld.c: Remove usage of ELF_ADJUST_ARG. 1997-03-20 20:44 Thomas Bushnell, n/BSG * sysdeps/mach/hurd/euidaccess.c: Define as __euidaccess and make euidaccess weak alias. 1997-03-07 10:30 Thomas Bushnell, n/BSG * stdio-common/printf_fphex.c (MIN): New macro. * sysdeps/generic/netinet/in.h: Include . * sysdeps/generic/sys/mman.h (msync): Mention third arg. * sysdeps/generic/netinet/in.h: Add definitions for IPv6 basic API. (See change by Philip Blundell on Feb 16, 1997.) 1997-03-05 10:40 Thomas Bushnell, n/BSG * hurd/hurd.h (vpprintf): Include . New declaration. * hurd/set-host.c (_hurd_set_host_config): Cast second arg to __file_name_split. * mach/mach_error.c (mach_error_string_int): Give full prototype. * mach/errstring.c (mach_error_string_int): Likewise. * mach/error_compat.c (__mach_error_map_compat): Likewise. * hurd/vpprintf.c (pwrite, vpprintf): Likewise. * stdio/vasprintf.c (vasprintf): Likewise. * mach/mach/mach_traps.h: Include . * mach/spin-solid.c: Include . * mach/spin-solid.c (__spin_lock_solid): Provide arg to swtch_pri. * mach/mach_init.c: Include . * mach/mach_error.h (mach_error_string, mach_error, mach_error_type): Always provide prototypes. * mach/mach/error.h (mach_error_fn_t): Comment out declaration; it appears to be entirely unused dead code. * stdio/stdio.h (freopen): Fix spelling error. 1997-03-02 13:38 Miles Bader * string/argz.h (__need_error_t): New macro, before including [!__const] (__const): New macro. [!__error_t_defined] (error_t): New typedef. * sysdeps/generic/socketbits.h: Add PF_FILE as synonym for PF_LOCAL * sysdeps/unix/sysv/linux/socketbits.h: Likewise. --- sysdeps/libm-ieee754/e_atan2l.c | 136 +++++++++++++++++++++++++++++++++++ sysdeps/libm-ieee754/s_fpclassifyl.c | 1 + sysdeps/libm-ieee754/s_isinf.c | 13 ++-- sysdeps/libm-ieee754/s_isinff.c | 11 +-- sysdeps/libm-ieee754/s_isinfl.c | 10 +-- sysdeps/libm-ieee754/s_scalbnl.c | 8 +-- sysdeps/libm-ieee754/w_atan2.c | 7 +- sysdeps/libm-ieee754/w_atan2f.c | 10 +-- sysdeps/libm-ieee754/w_atan2l.c | 5 +- sysdeps/libm-ieee754/w_pow.c | 5 +- sysdeps/libm-ieee754/w_powf.c | 17 +++-- sysdeps/libm-ieee754/w_powl.c | 5 +- 12 files changed, 184 insertions(+), 44 deletions(-) create mode 100644 sysdeps/libm-ieee754/e_atan2l.c (limited to 'sysdeps/libm-ieee754') diff --git a/sysdeps/libm-ieee754/e_atan2l.c b/sysdeps/libm-ieee754/e_atan2l.c new file mode 100644 index 0000000000..6b76f96533 --- /dev/null +++ b/sysdeps/libm-ieee754/e_atan2l.c @@ -0,0 +1,136 @@ +/* e_atan2l.c -- long double version of e_atan2.c. + * Conversion to long double by Ulrich Drepper, + * Cygnus Support, drepper@cygnus.com. + */ + +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunPro, a Sun Microsystems, Inc. business. + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +#if defined(LIBM_SCCS) && !defined(lint) +static char rcsid[] = "$NetBSD: $"; +#endif + +/* __ieee754_atan2l(y,x) + * Method : + * 1. Reduce y to positive by atan2(y,x)=-atan2(-y,x). + * 2. Reduce x to positive by (if x and y are unexceptional): + * ARG (x+iy) = arctan(y/x) ... if x > 0, + * ARG (x+iy) = pi - arctan[y/(-x)] ... if x < 0, + * + * Special cases: + * + * ATAN2((anything), NaN ) is NaN; + * ATAN2(NAN , (anything) ) is NaN; + * ATAN2(+-0, +(anything but NaN)) is +-0 ; + * ATAN2(+-0, -(anything but NaN)) is +-pi ; + * ATAN2(+-(anything but 0 and NaN), 0) is +-pi/2; + * ATAN2(+-(anything but INF and NaN), +INF) is +-0 ; + * ATAN2(+-(anything but INF and NaN), -INF) is +-pi; + * ATAN2(+-INF,+INF ) is +-pi/4 ; + * ATAN2(+-INF,-INF ) is +-3pi/4; + * ATAN2(+-INF, (anything but,0,NaN, and INF)) is +-pi/2; + * + * Constants: + * The hexadecimal values are the intended ones for the following + * constants. The decimal values may be used, provided that the + * compiler will convert from decimal to binary accurately enough + * to produce the hexadecimal values shown. + */ + +#include "math.h" +#include "math_private.h" + +#ifdef __STDC__ +static const long double +#else +static long double +#endif +tiny = 1.0e-4900L, +zero = 0.0, +pi_o_4 = 7.85398163397448309628202E-01L, /* 0x3FFE, 0xC90FDAA2, 0x2168C235 */ +pi_o_2 = 1.5707963267948966192564E+00L, /* 0x3FFF, 0xC90FDAA2, 0x2168C235 */ +pi = 3.14159265358979323851281E+00L, /* 0x4000, 0xC90FDAA2, 0x2168C235 */ +pi_lo = -5.01655761266833202345176e-20L;/* 0xBFBE, 0xECE675D1, 0xFC8F8CBB */ + +#ifdef __STDC__ + long double __ieee754_atan2l(long double y, long double x) +#else + long double __ieee754_atan2l(y,x) + long double y,x; +#endif +{ + long double z; + int32_t k,m,hx,hy,ix,iy; + u_int32_t sx,sy,lx,ly; + + EXTRACT_LDOUBLE_WORDS(sx,hx,lx,x); + ix = sx&0x7fff; + lx |= hx ^ 0x80000000; + EXTRACT_LDOUBLE_WORDS(sy,hy,ly,y); + iy = sy&0x7fff; + ly |= hy ^ 0x80000000; + if(((2*ix|((lx|-lx)>>31))>0xfffe)|| + ((2*iy|((ly|-ly)>>31))>0xfffe)) /* x or y is NaN */ + return x+y; + if((sx-0x3fff|lx)==0) return __atanl(y); /* x=1.0 */ + m = ((sy>>15)&1)|((sx>>14)&2); /* 2*sign(x)+sign(y) */ + + /* when y = 0 */ + if((iy|ly)==0) { + switch(m) { + case 0: + case 1: return y; /* atan(+-0,+anything)=+-0 */ + case 2: return pi+tiny;/* atan(+0,-anything) = pi */ + case 3: return -pi-tiny;/* atan(-0,-anything) =-pi */ + } + } + /* when x = 0 */ + if((ix|lx)==0) return (sy>=0x8000)? -pi_o_2-tiny: pi_o_2+tiny; + + /* when x is INF */ + if(ix==0x7fff) { + if(iy==0x7fff) { + switch(m) { + case 0: return pi_o_4+tiny;/* atan(+INF,+INF) */ + case 1: return -pi_o_4-tiny;/* atan(-INF,+INF) */ + case 2: return 3.0*pi_o_4+tiny;/*atan(+INF,-INF)*/ + case 3: return -3.0*pi_o_4-tiny;/*atan(-INF,-INF)*/ + } + } else { + switch(m) { + case 0: return zero ; /* atan(+...,+INF) */ + case 1: return -zero ; /* atan(-...,+INF) */ + case 2: return pi+tiny ; /* atan(+...,-INF) */ + case 3: return -pi-tiny ; /* atan(-...,-INF) */ + } + } + } + /* when y is INF */ + if(iy==0x7fff) return (hy>=0x8000)? -pi_o_2-tiny: pi_o_2+tiny; + + /* compute y/x */ + k = sy-sx; + if(k > 70) z=pi_o_2+0.5*pi_lo; /* |y/x| > 2**70 */ + else if(sx>=0x8000&&k<-70) z=0.0; /* |y|/x < -2**70 */ + else z=__atanl(fabsl(y/x)); /* safe to do y/x */ + switch (m) { + case 0: return z ; /* atan(+,+) */ + case 1: { + u_int32_t sz; + GET_LDOUBLE_EXP(sz,z); + SET_LDOUBLE_EXP(z,sy ^ 0x8000); + } + return z ; /* atan(-,+) */ + case 2: return pi-(z-pi_lo);/* atan(+,-) */ + default: /* case 3 */ + return (z-pi_lo)-pi;/* atan(-,-) */ + } +} diff --git a/sysdeps/libm-ieee754/s_fpclassifyl.c b/sysdeps/libm-ieee754/s_fpclassifyl.c index ef37e6f0cc..d7a0e943cf 100644 --- a/sysdeps/libm-ieee754/s_fpclassifyl.c +++ b/sysdeps/libm-ieee754/s_fpclassifyl.c @@ -30,6 +30,7 @@ __fpclassifyl (long double x) int retval = FP_NORMAL; GET_LDOUBLE_WORDS (ex, hx, lx, x); + hx &= 0x7fffffff; hx |= lx; ex &= 0x7fff; if ((ex | hx) == 0) diff --git a/sysdeps/libm-ieee754/s_isinf.c b/sysdeps/libm-ieee754/s_isinf.c index b35fc1c41c..d3c2cb55b7 100644 --- a/sysdeps/libm-ieee754/s_isinf.c +++ b/sysdeps/libm-ieee754/s_isinf.c @@ -1,5 +1,6 @@ /* * Written by J.T. Conklin . + * Changed to return -1 for -Inf by Ulrich Drepper . * Public domain. */ @@ -8,7 +9,7 @@ static char rcsid[] = "$NetBSD: s_isinf.c,v 1.3 1995/05/11 23:20:14 jtc Exp $"; #endif /* - * isinf(x) returns 1 is x is inf, else 0; + * isinf(x) returns 1 is x is inf, -1 if x is -inf, else 0; * no branching! */ @@ -22,12 +23,12 @@ static char rcsid[] = "$NetBSD: s_isinf.c,v 1.3 1995/05/11 23:20:14 jtc Exp $"; double x; #endif { - int32_t hx,lx; + u_int32_t hx; + int32_t lx; EXTRACT_WORDS(hx,lx,x); - hx &= 0x7fffffff; - hx ^= 0x7ff00000; - hx |= lx; - return (hx == 0); + lx |= (hx & 0x7fffffff) ^ 0x7ff00000; + lx |= -lx; + return ~(lx >> 31) & (1 - ((hx >> 30) & 2)); } weak_alias (__isinf, isinf) #ifdef NO_LONG_DOUBLE diff --git a/sysdeps/libm-ieee754/s_isinff.c b/sysdeps/libm-ieee754/s_isinff.c index 1d81f15986..9acc0df6ec 100644 --- a/sysdeps/libm-ieee754/s_isinff.c +++ b/sysdeps/libm-ieee754/s_isinff.c @@ -8,7 +8,7 @@ static char rcsid[] = "$NetBSD: s_isinff.c,v 1.3 1995/05/11 23:20:21 jtc Exp $"; #endif /* - * isinff(x) returns 1 is x is inf, else 0; + * isinff(x) returns 1 if x is inf, -1 if x is -inf, else 0; * no branching! */ @@ -22,10 +22,11 @@ static char rcsid[] = "$NetBSD: s_isinff.c,v 1.3 1995/05/11 23:20:21 jtc Exp $"; float x; #endif { - int32_t ix; + int32_t ix,t; GET_FLOAT_WORD(ix,x); - ix &= 0x7fffffff; - ix ^= 0x7f800000; - return (ix == 0); + t = ix & 0x7fffffff; + t ^= 0x7f800000; + t |= -t; + return ~(t >> 31) & (1 - ((ix & 0x80000000) >> 30)); } weak_alias (__isinff, isinff) diff --git a/sysdeps/libm-ieee754/s_isinfl.c b/sysdeps/libm-ieee754/s_isinfl.c index 22dff75444..b499821441 100644 --- a/sysdeps/libm-ieee754/s_isinfl.c +++ b/sysdeps/libm-ieee754/s_isinfl.c @@ -9,7 +9,7 @@ static char rcsid[] = "$NetBSD: $"; #endif /* - * isinfl(x) returns 1 is x is inf, else 0; + * isinfl(x) returns 1 if x is inf, -1 if x is -inf, else 0; * no branching! */ @@ -25,9 +25,9 @@ static char rcsid[] = "$NetBSD: $"; { int32_t se,hx,lx; GET_LDOUBLE_WORDS(se,hx,lx,x); - se &= 0x7fff; - se ^= 0x7fff; - se |= hx | lx; - return (se == 0); + hx |= lx | ((se & 0x7fff) ^ 0x7fff); + hx |= -hx; + se &= 0x8000; + return ~(hx >> 31) & (1 - (se >> 14)); } weak_alias (__isinfl, isinfl) diff --git a/sysdeps/libm-ieee754/s_scalbnl.c b/sysdeps/libm-ieee754/s_scalbnl.c index d00eb88167..6825e9c7b3 100644 --- a/sysdeps/libm-ieee754/s_scalbnl.c +++ b/sysdeps/libm-ieee754/s_scalbnl.c @@ -33,10 +33,10 @@ static const long double #else static long double #endif -two54 = 1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */ -twom54 = 5.55111512312578270212e-17, /* 0x3C900000, 0x00000000 */ -huge = 1.0e+300, -tiny = 1.0e-300; +two54 = 1.80143985094819840000e+16, /* 0x4035, 0x00000000, 0x00000000 */ +twom54 = 5.55111512312578270212e-17, /* 0x3FC9, 0x00000000, 0x00000000 */ +huge = 1.0e+4900L, +tiny = 1.0e-4900L; #ifdef __STDC__ long double __scalbnl (long double x, int n) diff --git a/sysdeps/libm-ieee754/w_atan2.c b/sysdeps/libm-ieee754/w_atan2.c index ec29d55eb9..3f6032f977 100644 --- a/sysdeps/libm-ieee754/w_atan2.c +++ b/sysdeps/libm-ieee754/w_atan2.c @@ -34,11 +34,10 @@ static char rcsid[] = "$NetBSD: w_atan2.c,v 1.6 1995/05/10 20:48:39 jtc Exp $"; #else double z; z = __ieee754_atan2(y,x); - if(_LIB_VERSION == _IEEE_||__isnan(x)||__isnan(y)) return z; + if(_LIB_VERSION != _SVID_||__isnan(x)||__isnan(y)) return z; if(x==0.0&&y==0.0) { - return __kernel_standard(y,x,3); /* atan2(+-0,+-0) */ - } else - return z; + return __kernel_standard(y,x,3); /* atan2(+-0,+-0) */ + return z; #endif } weak_alias (__atan2, atan2) diff --git a/sysdeps/libm-ieee754/w_atan2f.c b/sysdeps/libm-ieee754/w_atan2f.c index 4d67638572..00b2ce7633 100644 --- a/sysdeps/libm-ieee754/w_atan2f.c +++ b/sysdeps/libm-ieee754/w_atan2f.c @@ -8,7 +8,7 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ @@ -17,7 +17,7 @@ static char rcsid[] = "$NetBSD: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $"; #endif -/* +/* * wrapper atan2f(y,x) */ @@ -38,11 +38,7 @@ static char rcsid[] = "$NetBSD: w_atan2f.c,v 1.3 1995/05/10 20:48:42 jtc Exp $"; float z; z = __ieee754_atan2f(y,x); if(_LIB_VERSION == _IEEE_||__isnanf(x)||__isnanf(y)) return z; - if(x==(float)0.0&&y==(float)0.0) { - /* atan2f(+-0,+-0) */ - return (float)__kernel_standard((double)y,(double)x,103); - } else - return z; + return z; #endif } weak_alias (__atan2f, atan2f) diff --git a/sysdeps/libm-ieee754/w_atan2l.c b/sysdeps/libm-ieee754/w_atan2l.c index 9e6e56bbed..437a04c760 100644 --- a/sysdeps/libm-ieee754/w_atan2l.c +++ b/sysdeps/libm-ieee754/w_atan2l.c @@ -39,10 +39,7 @@ static char rcsid[] = "$NetBSD: $"; long double z; z = __ieee754_atan2l(y,x); if(_LIB_VERSION == _IEEE_||__isnanl(x)||__isnanl(y)) return z; - if(x==0.0&&y==0.0) { - return __kernel_standard(y,x,203); /* atan2l(+-0,+-0) */ - } else - return z; + return z; #endif } weak_alias (__atan2l, atan2l) diff --git a/sysdeps/libm-ieee754/w_pow.c b/sysdeps/libm-ieee754/w_pow.c index ea19e1f554..1711d71bda 100644 --- a/sysdeps/libm-ieee754/w_pow.c +++ b/sysdeps/libm-ieee754/w_pow.c @@ -43,7 +43,10 @@ if(y==0.0) return __kernel_standard(x,y,20); /* pow(0.0,0.0) */ if(__finite(y)&&y<0.0) - return __kernel_standard(x,y,23); /* pow(0.0,negative) */ + if (signbit (x) && signbit (z)) + return __kernel_standard(x,y,23); /* pow(-0.0,negative) */ + else + return __kernel_standard(x,y,43); /* pow(+0.0,negative) */ return z; } if(!__finite(z)) { diff --git a/sysdeps/libm-ieee754/w_powf.c b/sysdeps/libm-ieee754/w_powf.c index 3f9d5c8d5f..0b20822be8 100644 --- a/sysdeps/libm-ieee754/w_powf.c +++ b/sysdeps/libm-ieee754/w_powf.c @@ -8,7 +8,7 @@ * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this - * software is freely granted, provided that this notice + * software is freely granted, provided that this notice * is preserved. * ==================================================== */ @@ -17,7 +17,7 @@ static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $"; #endif -/* +/* * wrapper powf(x,y) return x**y */ @@ -39,19 +39,22 @@ static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $"; z=__ieee754_powf(x,y); if(_LIB_VERSION == _IEEE_|| __isnanf(y)) return z; if(__isnanf(x)) { - if(y==(float)0.0) + if(y==(float)0.0) /* powf(NaN,0.0) */ return (float)__kernel_standard((double)x,(double)y,142); - else + else return z; } - if(x==(float)0.0){ + if(x==(float)0.0){ if(y==(float)0.0) /* powf(0.0,0.0) */ return (float)__kernel_standard((double)x,(double)y,120); if(__finitef(y)&&y<(float)0.0) + if (signbit (x) && signbit (z)) /* powf(0.0,negative) */ return (float)__kernel_standard((double)x,(double)y,123); + else + return (float)__kernel_standard((double)x,(double)y,143); return z; } if(!__finitef(z)) { @@ -59,11 +62,11 @@ static char rcsid[] = "$NetBSD: w_powf.c,v 1.3 1995/05/10 20:49:41 jtc Exp $"; if(__isnanf(z)) /* powf neg**non-int */ return (float)__kernel_standard((double)x,(double)y,124); - else + else /* powf overflow */ return (float)__kernel_standard((double)x,(double)y,121); } - } + } if(z==(float)0.0&&__finitef(x)&&__finitef(y)) /* powf underflow */ return (float)__kernel_standard((double)x,(double)y,122); diff --git a/sysdeps/libm-ieee754/w_powl.c b/sysdeps/libm-ieee754/w_powl.c index 019664e0f1..aea572d905 100644 --- a/sysdeps/libm-ieee754/w_powl.c +++ b/sysdeps/libm-ieee754/w_powl.c @@ -45,7 +45,10 @@ if(y==0.0) return __kernel_standard(x,y,220); /* pow(0.0,0.0) */ if(__finite(y)&&y<0.0) - return __kernel_standard(x,y,223); /* pow(0.0,negative) */ + if (signbit (x) && signbit (z)) + return __kernel_standard(x,y,223); /* pow(-0.0,negative) */ + else + return __kernel_standard(x,y,243); /* pow(+0.0,negative) */ return z; } if(!__finitel(z)) { -- cgit 1.4.1