+1998-05-30 Philip Blundell <Philip.Blundell@pobox.com>
+
+ * stdlib/gmp-impl.h: Support strange mixed-endian double format
+ used by ARM systems.
+ * sysdeps/arm/fpu/bits/fenv.h (FE_EXCEPTION_SHIFT): Rename to
+ FE_EXCEPT_SHIFT.
+ * sysdeps/arm/bits/fenv.h: Deleted.
+ * sysdeps/arm/fpu/ieee754.h: New file.
+ * sysdeps/arm/gmp-mparam.h: New file.
+ * stdlib/longlong.h (umul_ppmm): Temporarily disable broken ARM
+ implementation.
+
1998-06-01 Ulrich Drepper <drepper@cygnus.com>
* sunrpc/rpc/xdr.h (struct XDR): Don't mark xdr_ops element as const.
#define IEEE_DOUBLE_BIG_ENDIAN 1
#endif
+#ifndef IEEE_DOUBLE_MIXED_ENDIAN
+#define IEEE_DOUBLE_MIXED_ENDIAN 0
+#endif
+
+#if IEEE_DOUBLE_MIXED_ENDIAN
+union ieee_double_extract
+{
+ struct
+ {
+ unsigned int manh:20;
+ unsigned int exp:11;
+ unsigned int sig:1;
+ unsigned int manl:32;
+ } s;
+ double d;
+};
+#else
#if IEEE_DOUBLE_BIG_ENDIAN
union ieee_double_extract
{
double d;
};
#endif
+#endif
"rI" ((USItype)(bh)), \
"r" ((USItype)(al)), \
"rI" ((USItype)(bl)))
+#if 0
#define umul_ppmm(xh, xl, a, b) \
__asm__ ("%@ Inlined umul_ppmm
mov %|r0, %2, lsr #16
: "r0", "r1", "r2")
#define UMUL_TIME 20
#define UDIV_TIME 100
+#endif
#endif /* __arm__ */
#if defined (__clipper__) && W_TYPE_SIZE == 32
+++ /dev/null
-/* Copyright (C) 1997, 1998 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#ifndef _FENV_H
-# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
-#endif
-
-
-/* Define bits representing the exception. We use the bit positions
- of the appropriate bits in the FPU control word. */
-enum
- {
- FE_INVALID = 0x01,
-#define FE_INVALID FE_INVALID
- __FE_DENORM = 0x02,
- FE_DIVBYZERO = 0x04,
-#define FE_DIVBYZERO FE_DIVBYZERO
- FE_OVERFLOW = 0x08,
-#define FE_OVERFLOW FE_OVERFLOW
- FE_UNDERFLOW = 0x10,
-#define FE_UNDERFLOW FE_UNDERFLOW
- FE_INEXACT = 0x20
-#define FE_INEXACT FE_INEXACT
- };
-
-#define FE_ALL_EXCEPT \
- (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID)
-
-/* The ARM FPU supports all of the four defined rounding modes. We
- use again the bit positions in the FPU control word as the values
- for the appropriate macros. */
-enum
- {
- FE_TONEAREST = 0,
-#define FE_TONEAREST FE_TONEAREST
- FE_DOWNWARD = 0x400,
-#define FE_DOWNWARD FE_DOWNWARD
- FE_UPWARD = 0x800,
-#define FE_UPWARD FE_UPWARD
- FE_TOWARDSZERO = 0xc00
-#define FE_TOWARDSZERO FE_TOWARDSZERO
- };
-
-
-/* Type representing exception flags. */
-typedef unsigned short int fexcept_t;
-
-
-/* Type representing floating-point environment. This function corresponds
- to the layout of the block written by the `fstenv'. */
-typedef struct
- {
- unsigned short int control_word;
- unsigned short int __unused1;
- unsigned short int status_word;
- unsigned short int __unused2;
- unsigned short int tags;
- unsigned short int __unused3;
- unsigned int eip;
- unsigned short int cs_selector;
- unsigned int opcode:11;
- unsigned int __unused4:5;
- unsigned int data_offset;
- unsigned short int data_selector;
- unsigned short int __unused5;
- }
-fenv_t;
-
-/* If the default argument is used we use this value. */
-#define FE_DFL_ENV ((fenv_t *) -1)
-
-#ifdef __USE_GNU
-/* Floating-point environment where none of the exception is masked. */
-# define FE_NOMASK_ENV ((fenv_t *) -2)
-#endif
};
/* Amount to shift by to convert an exception to a mask bit. */
-#define FE_EXCEPTION_SHIFT 16
+#define FE_EXCEPT_SHIFT 16
/* All supported exceptions. */
#define FE_ALL_EXCEPT \
--- /dev/null
+/* Copyright (C) 1992, 1995, 1996, 1998 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _IEEE754_H
+
+#define _IEEE754_H 1
+#include <features.h>
+
+#include <endian.h>
+
+__BEGIN_DECLS
+
+union ieee754_float
+ {
+ float f;
+
+ /* This is the IEEE 754 single-precision format. */
+ struct
+ {
+ unsigned int mantissa:23;
+ unsigned int exponent:8;
+ unsigned int negative:1;
+ } ieee;
+
+ /* This format makes it easier to see if a NaN is a signalling NaN. */
+ struct
+ {
+ unsigned int mantissa:22;
+ unsigned int quiet_nan:1;
+ unsigned int exponent:8;
+ unsigned int negative:1;
+ } ieee_nan;
+ };
+
+#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
+
+
+union ieee754_double
+ {
+ double d;
+
+ /* This is the IEEE 754 double-precision format. */
+ struct
+ {
+ unsigned int mantissa0:20;
+ unsigned int exponent:11;
+ unsigned int negative:1;
+ unsigned int mantissa1:32;
+ } ieee;
+
+ /* This format makes it easier to see if a NaN is a signalling NaN. */
+ struct
+ {
+ unsigned int mantissa0:19;
+ unsigned int quiet_nan:1;
+ unsigned int exponent:11;
+ unsigned int negative:1;
+ unsigned int mantissa1:32;
+ } ieee_nan;
+ };
+
+#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
+
+
+/* The following two structures are correct for `new' floating point systems but
+ wrong for the old FPPC. The only solution seems to be to avoid their use on
+ old hardware. */
+
+union ieee854_long_double
+ {
+ long double d;
+
+ /* This is the IEEE 854 double-extended-precision format. */
+ struct
+ {
+ unsigned int exponent:15;
+ unsigned int empty:16;
+ unsigned int negative:1;
+ unsigned int mantissa1:32;
+ unsigned int mantissa0:32;
+ } ieee;
+
+ /* This is for NaNs in the IEEE 854 double-extended-precision format. */
+ struct
+ {
+ unsigned int exponent:15;
+ unsigned int empty:16;
+ unsigned int negative:1;
+ unsigned int mantissa1:32;
+ unsigned int mantissa0:30;
+ unsigned int quiet_nan:1;
+ unsigned int one:1;
+ } ieee_nan;
+ };
+
+#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
+
+__END_DECLS
+
+#endif /* ieee754.h */
--- /dev/null
+/* gmp-mparam.h -- Compiler/machine parameter header file.
+
+Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#define BITS_PER_MP_LIMB 32
+#define BYTES_PER_MP_LIMB 4
+#define BITS_PER_LONGINT 32
+#define BITS_PER_INT 32
+#define BITS_PER_SHORTINT 16
+#define BITS_PER_CHAR 8
+
+#define IEEE_DOUBLE_BIG_ENDIAN 0
+#define IEEE_DOUBLE_MIXED_ENDIAN 1
projects / thirdparty / glibc.git / commitdiff
