diff options
author | Ulrich Drepper <drepper@redhat.com> | 1997-05-31 00:47:04 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1997-05-31 00:47:04 +0000 |
commit | f671aeab4e17d6dc1c3ca96ac5cb2c3e04570082 (patch) | |
tree | 4e9817a3ff486d961a430f8fd3ee39c5fdff32b2 /sysdeps/ieee754 | |
parent | d951286f645cc1d6f719c0c715620fc395c049d4 (diff) |
Update.cvs/libc-ud-970530
1997-05-31 02:33 Ulrich Drepper <drepper@cygnus.com>
* io/ftwtest-sh: More tests.
* misc/tsearch.c: Rewrite tdestroy_recursive.
* libio/libio.h: Define bits for libg++-2.8.
1997-05-30 22:21 Thorsten Kukuk <kukuk@vt.uni-paderborn.de>
* nis/nss_nis/nis-hosts.c: Same changes as in
nss/nss_files/files-hosts.c (Always use inet_pton).
* nis/nss_nisplus/nisplus-hosts.c: Likewise.
1997-05-30 09:50 Richard Henderson <rth@tamu.edu>
* manual/maint.texi: ECOFF hasn't been tested in ages and I don't
plan on doing so ever again. Don't say alpha-linuxecoff is known
to work.
* elf/dl-lookup.c: Include <alloca.h>.
* misc/tsearch.c: Include <string.h>.
* posix/execle.c: Include <alloca.h>.
* posix/execlp.c: Likewise.
* stdio-common/printf_fphex.c: Include <string.h>.
* sunrpc/xdr.c: Include <string.h>.
* sysdeps/generic/memccpy.c: Include only <string.h>.
* sunrpc/clnt_udp.c (clntudp_call): Make fromlen a size_t to fix
parameters to network functions.
* sunrpc/pmap_rmt.c (clnt_broadcast): Likewise.
* sunrpc/svc_tcp.c (svctcp_create): Likewise with `len'.
(rendezvous_request): Likewise.
* sunrpc/svc_udp.c (svcudp_bufcreate): Likewise.
(svcudp_recv): Similar, but go through a local variable. The old code
used &xprt->xp_addrlen. Someone should determine if the type of the
structure member should be changed instead.
* sunrpc/xdr_rec.c (xdrrec_create): Expunge a ptr->int cast warning
and transform a nonsense for-loop to a closed form calculation.
(fill_input_buf): Another ptr->int warning.
* sysdeps/alpha/Makefile: Temporarily turn on -mieee globally. This
will last until I figure out how to build a parallel libm_ieee.
* sysdeps/alpha/fpu/fclrexcpt.c,
* sysdeps/alpha/fpu/fegetenv.c,
* sysdeps/alpha/fpu/fegetround.c,
* sysdeps/alpha/fpu/feholdexcpt.c,
* sysdeps/alpha/fpu/fenvbits.h,
* sysdeps/alpha/fpu/fesetenv.c,
* sysdeps/alpha/fpu/fesetround.c,
* sysdeps/alpha/fpu/feupdateenv.c,
* sysdeps/alpha/fpu/fgetexcptflg.c,
* sysdeps/alpha/fpu/fraiseexcpt.c,
* sysdeps/alpha/fpu/fsetexcptflg.c,
* sysdeps/alpha/fpu/ftestexcept.c: New files. There is, btw, a small
kernel patch that must be applied as of 2.0.31-pre1 and 2.1.41 for
this to work properly.
* sysdeps/alpha/fpu/fpu_control.h: Update copyright. Change default
FP mode to round to nearest, no exceptions as for Intel.
* sysdeps/unix/sysv/linux/alpha/setfpucw.c: Add copyright.
(rdfpcr): Use excb rather than trapb. Be more efficient about
getting at the fpcr.
(wrfpcr): Likewise.
(__setfpucw): Reformat.
* sysdeps/ieee754/huge_val.h: Change GCC's HUGE_VAL definition to use
a single DI-mode integer instead of bytes. This produces better code
on Alpha. Similar for HUGE_VALF.
* sysdeps/ieee754/nan.h: Similar for NAN. Add NANF and NANL.
* sysdeps/libm-ieee754/s_log2.c: Missing */ and weak_alias.
* sysdeps/unix/alpha/sysdep.S: Tiny cleanups.
* sysdeps/unix/sysv/linux/alpha/syscall.S: Likewise.
* sysdeps/unix/sysv/linux/alpha/brk.S: Don't use jmp macro to make
sure the stack frame is released the very instruction before the
real jump out.
* sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S: Likewise.
* sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S: Likewise.
* sysdeps/unix/sysv/linux/alpha/gnu/types.h: Undef some bits we may
have gotten from <linux/posix_types.h>.
* sysdeps/unix/sysv/linux/alpha/ioperm.c: Add definition for Miata.
1997-05-30 13:05 Ulrich Drepper <drepper@cygnus.com>
* misc/tst-tsearch.c (mangle_tree): Update casts to prevent
warnings.
1997-05-29 14:02 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/unix/sysv/linux/sys/ttydefaults.h (CEOL, CSTATUS): Use
correct value for _POSIX_VDISABLE.
1997-05-29 13:59 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* Makefile (manual/dir-add.texi): Force execution.
1997-05-29 13:57 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysexits.h: New file.
1997-05-29 13:55 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* stdlib/strfmon.c: Don't run past EOS after `='.
1997-02-27 10:34 Richard Henderson <rth@tamu.edu>
Diffstat (limited to 'sysdeps/ieee754')
-rw-r--r-- | sysdeps/ieee754/huge_val.h | 38 | ||||
-rw-r--r-- | sysdeps/ieee754/nan.h | 37 |
2 files changed, 54 insertions, 21 deletions
diff --git a/sysdeps/ieee754/huge_val.h b/sysdeps/ieee754/huge_val.h index 9d1785b75f..a2520859e4 100644 --- a/sysdeps/ieee754/huge_val.h +++ b/sysdeps/ieee754/huge_val.h @@ -27,6 +27,17 @@ /* IEEE positive infinity (-HUGE_VAL is negative infinity). */ +#ifdef __GNUC__ + +#define HUGE_VAL \ + (__extension__ \ + ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \ + { __l: 0x7ff0000000000000ULL }).__d) + +#else /* not GCC */ + +typedef union { unsigned char __c[8]; double __d; } __huge_val_t; + #if __BYTE_ORDER == __BIG_ENDIAN #define __HUGE_VAL_bytes { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 } #endif @@ -34,13 +45,9 @@ #define __HUGE_VAL_bytes { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f } #endif -#define __huge_val_t union { unsigned char __c[8]; double __d; } -#ifdef __GNUC__ -#define HUGE_VAL (__extension__ \ - ((__huge_val_t) { __c: __HUGE_VAL_bytes }).__d) -#else /* Not GCC. */ static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; #define HUGE_VAL (__huge_val.__d) + #endif /* GCC. */ @@ -48,6 +55,17 @@ static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; #ifdef __USE_ISOC9X +#ifdef __GNUC__ + +#define HUGE_VALF \ + (__extension__ \ + ((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; }) \ + { __l: 0x7f800000UL }).__d) + +#else /* not GCC */ + +typedef union { unsigned char __c[4]; float __f; } __huge_valf_t; + #if __BYTE_ORDER == __BIG_ENDIAN #define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 } #endif @@ -55,13 +73,9 @@ static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; #define __HUGE_VALF_bytes { 0, 0, 0x80, 0x7f } #endif -#define __huge_valf_t union { unsigned char __c[4]; float __f; } -#ifdef __GNUC__ -#define HUGE_VALF (__extension__ \ - ((__huge_valf_t) { __c: __HUGE_VALF_bytes }).__f) -#else /* Not GCC. */ static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes }; #define HUGE_VALF (__huge_valf.__f) + #endif /* GCC. */ @@ -69,6 +83,6 @@ static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes }; same as `double'. */ #define HUGE_VALL HUGE_VAL -#endif /* __USE_ISOC9X. */ +#endif /* __USE_ISOC9X. */ -#endif /* huge_val.h */ +#endif /* huge_val.h */ diff --git a/sysdeps/ieee754/nan.h b/sysdeps/ieee754/nan.h index bea98d96d4..d4e6842562 100644 --- a/sysdeps/ieee754/nan.h +++ b/sysdeps/ieee754/nan.h @@ -1,5 +1,5 @@ /* `NAN' constant for IEEE 754 machines. - Copyright (C) 1992, 1996 Free Software Foundation, Inc. + Copyright (C) 1992, 1996, 1997 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 @@ -23,23 +23,42 @@ /* IEEE Not A Number. */ +#ifdef __GNUC__ + +#define NAN \ + (__extension__ \ + ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \ + { __l: 0x7ff8000000000000ULL }).__d) + +#define NANF \ + (__extension__ \ + ((union { unsigned __l __attribute__((__mode__(__SI__))); flaot __d; }) \ + { __l: 0x7fc00000UL }).__d) + +#else + #include <endian.h> #if __BYTE_ORDER == __BIG_ENDIAN #define __nan_bytes { 0x7f, 0xf8, 0, 0, 0, 0, 0, 0 } +#define __nanf_bytes { 0x7f, 0xc0, 0, 0 } #endif #if __BYTE_ORDER == __LITTLE_ENDIAN #define __nan_bytes { 0, 0, 0, 0, 0, 0, 0xf8, 0x7f } +#define __nanf_bytes { 0, 0, 0xc0, 0x7f } #endif -#ifdef __GNUC__ -#define NAN \ - (__extension__ ((union { unsigned char __c[8]; \ - double __d; }) \ - { __nan_bytes }).__d) -#else /* Not GCC. */ -static CONST char __nan[8] = __nan_bytes; -#define NAN (*(CONST double *) __nan) +static union { unsigned char __c[8]; double __d; } __nan = { __nan_bytes }; +#define NAN (__nan.__d) + +static union { unsigned char __c[4]; double __d; } __nanf = { __nanf_bytes }; +#define NANF (__nanf.__d) + #endif /* GCC. */ +/* Generally there is no separate `long double' format and it is the + same as `double'. */ + +#define NANL NAN + #endif /* nan.h */ |