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authorUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
committerUlrich Drepper <drepper@redhat.com>1999-07-14 00:54:57 +0000
commitabfbdde177c3a7155070dda1b2cdc8292054cc26 (patch)
treee021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/sparc
parent86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff)
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Update.
Diffstat (limited to 'sysdeps/sparc')
-rw-r--r--sysdeps/sparc/Implies2
-rw-r--r--sysdeps/sparc/fpu/bits/mathdef.h15
-rw-r--r--sysdeps/sparc/fpu/bits/mathinline.h211
-rw-r--r--sysdeps/sparc/sparc32/Implies3
-rw-r--r--sysdeps/sparc/sparc32/bits/wordsize.h (renamed from sysdeps/sparc/bits/wordsize.h)0
-rw-r--r--sysdeps/sparc/sparc32/fpu/bits/huge_val.h100
-rw-r--r--sysdeps/sparc/sparc64/Implies4
-rw-r--r--sysdeps/sparc/sparc64/Makefile13
-rw-r--r--sysdeps/sparc/sparc64/addmul_1.S36
-rw-r--r--sysdeps/sparc/sparc64/bits/wordsize.h7
-rw-r--r--sysdeps/sparc/sparc64/fpu/bits/huge_val.h100
11 files changed, 454 insertions, 37 deletions
diff --git a/sysdeps/sparc/Implies b/sysdeps/sparc/Implies
deleted file mode 100644
index da719e1707..0000000000
--- a/sysdeps/sparc/Implies
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPARC uses IEEE 754 floating point.
-ieee754
diff --git a/sysdeps/sparc/fpu/bits/mathdef.h b/sysdeps/sparc/fpu/bits/mathdef.h
index c1727b66bb..5294ad4720 100644
--- a/sysdeps/sparc/fpu/bits/mathdef.h
+++ b/sysdeps/sparc/fpu/bits/mathdef.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1998, 1999 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
@@ -20,6 +20,8 @@
# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
#endif
+#include <bits/wordsize.h>
+
/* FIXME! This file describes properties of the compiler, not the machine;
it should not be part of libc! */
@@ -74,7 +76,12 @@ typedef double double_t;
#endif /* ISO C 9X */
#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'. The disables the
- declaration of all the `long double' function variants. */
-# define __NO_LONG_DOUBLE_MATH 1
+
+# if __WORDSIZE == 32
+/* Signal that in 32bit ABI we do not really have a `long double'.
+ The disables the declaration of all the `long double' function
+ variants. */
+# define __NO_LONG_DOUBLE_MATH 1
+# endif
+
#endif
diff --git a/sysdeps/sparc/fpu/bits/mathinline.h b/sysdeps/sparc/fpu/bits/mathinline.h
new file mode 100644
index 0000000000..9017be3544
--- /dev/null
+++ b/sysdeps/sparc/fpu/bits/mathinline.h
@@ -0,0 +1,211 @@
+/* Inline math functions for SPARC.
+ Copyright (C) 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jj@ultra.linux.cz>.
+
+ 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 _MATH_H
+# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
+#endif
+
+#include <bits/wordsize.h>
+
+#if defined __GNUC__
+
+#ifdef __USE_ISOC9X
+
+#if __WORDSIZE == 32
+
+# define __unordered_cmp(x, y) \
+ (__extension__ \
+ ({ unsigned __r; \
+ if (sizeof(x) == 4 && sizeof(y) == 4) \
+ { \
+ float __x = (x); float __y = (y); \
+ __asm__("fcmps %1,%2; st %%fsr, %0" : "=m" (__r) : "f" (__x), \
+ "f" (__y) : "cc"); \
+ } \
+ else \
+ { \
+ double __x = (x); double __y = (y); \
+ __asm__("fcmpd\t%1,%2\n\tst\t%%fsr,%0" : "=m" (__r) : "f" (__x), \
+ "f" (__y) : "cc"); \
+ } \
+ __r; }))
+
+# define isgreater(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (2 << 10))
+# define isgreaterequal(x, y) ((__unordered_cmp (x, y) & (1 << 10)) == 0)
+# define isless(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (1 << 10))
+# define islessequal(x, y) ((__unordered_cmp (x, y) & (2 << 10)) == 0)
+# define islessgreater(x, y) (((__unordered_cmp (x, y) + (1 << 10)) & (2 << 10)) != 0)
+# define isunordered(x, y) ((__unordered_cmp (x, y) & (3 << 10)) == (3 << 10))
+
+#else /* sparc64 */
+
+# define __unordered_v9cmp(x, y, op, qop) \
+ (__extension__ \
+ ({ unsigned __r; \
+ if (sizeof(x) == 4 && sizeof(y) == 4) \
+ { \
+ float __x = (x); float __y = (y); \
+ __asm__("fcmps\t%%fcc3,%1,%2\n\tmov" ## op ## "\t%%fcc3,1,%0" \
+ : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc"); \
+ } \
+ else if (sizeof(x) <= 8 && sizeof(y) <= 8) \
+ { \
+ double __x = (x); double __y = (y); \
+ __asm__("fcmpd\t%%fcc3,%1,%2\n\tmov" ## op ## "\t%%fcc3,1,%0" \
+ : "=r" (__r) : "f" (__x), "f" (__y), "0" (0) : "cc"); \
+ } \
+ else \
+ { \
+ long double __x = (x); long double __y = (y); \
+ extern int _Qp_cmp(const long double *a, const long double *b); \
+ __r = qop; \
+ } \
+ __r; }))
+
+# define isgreater(x, y) __unordered_v9cmp(x, y, "g", _Qp_cmp (&__x, &__y) == 2)
+# define isgreaterequal(x, y) __unordered_v9cmp(x, y, "ge", (_Qp_cmp (&__x, &__y) & 1) == 0)
+# define isless(x, y) __unordered_v9cmp(x, y, "l", _Qp_cmp (&__x, &__y) == 1)
+# define islessequal(x, y) __unordered_v9cmp(x, y, "le", (_Qp_cmp (&__x, &__y) & 2) == 0)
+# define islessgreater(x, y) __unordered_v9cmp(x, y, "lg", ((_Qp_cmp (&__x, &__y) + 1) & 2) != 0)
+# define isunordered(x, y) __unordered_v9cmp(x, y, "u", _Qp_cmp (&__x, &__y) == 3)
+
+#endif /* sparc64 */
+
+#endif /* __USE_ISOC9X */
+
+#if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) && defined __OPTIMIZE__
+
+#ifdef __cplusplus
+# define __MATH_INLINE __inline
+#else
+# define __MATH_INLINE extern __inline
+#endif /* __cplusplus */
+
+/* The gcc, version 2.7 or below, has problems with all this inlining
+ code. So disable it for this version of the compiler. */
+
+# if (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 7))
+ /* Test for negative number. Used in the signbit() macro. */
+__MATH_INLINE int
+__signbitf (float __x)
+{
+ __extension__ union { float __f; int __i; } __u = { __f: __x };
+ return __u.__i < 0;
+}
+
+__MATH_INLINE int
+__signbit (double __x)
+{
+ __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
+ return __u.__i[0] < 0;
+}
+
+__MATH_INLINE int
+__signbitl (long double __x)
+{
+ if (sizeof(long double) == 8)
+ {
+ __extension__ union { long double __l; int __i[2]; } __u = { __l: __x };
+ return __u.__i[0] < 0;
+ }
+ else
+ {
+ __extension__ union { long double __l; int __i[4]; } __u = { __l: __x };
+ return __u.__i[0] < 0;
+ }
+}
+
+__MATH_INLINE double
+sqrt(double __x)
+{
+ register double __r;
+ __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
+ return __r;
+}
+
+__MATH_INLINE float
+sqrtf(float __x)
+{
+ register float __r;
+ __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
+ return __r;
+}
+
+#if __WORDSIZE == 64
+__MATH_INLINE long double
+sqrtl(long double __x)
+{
+ long double __r;
+ extern void _Qp_sqrt(long double *, __const__ long double *);
+ _Qp_sqrt(&__r, &__x);
+ return __r;
+}
+#endif /* sparc64 */
+
+/* This code is used internally in the GNU libc. */
+#ifdef __LIBC_INTERNAL_MATH_INLINES
+__MATH_INLINE double
+__ieee754_sqrt(double __x)
+{
+ register double __r;
+ __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));
+ return __r;
+}
+
+__MATH_INLINE float
+__ieee754_sqrtf(float __x)
+{
+ register float __r;
+ __asm ("fsqrts %1,%0" : "=f" (__r) : "f" (__x));
+ return __r;
+}
+
+#if __WORDSIZE == 64
+__MATH_INLINE long double
+__ieee754_sqrtl(long double __x)
+{
+ long double __r;
+ extern void _Qp_sqrt(long double *, __const__ long double *);
+ _Qp_sqrt(&__r, &__x);
+ return __r;
+}
+#endif /* sparc64 */
+#endif /* __LIBC_INTERNAL_MATH_INLINES */
+#endif /* gcc 2.8+ */
+
+#ifdef __USE_ISOC9X
+
+__MATH_INLINE double fdim (double __x, double __y);
+__MATH_INLINE double
+fdim (double __x, double __y)
+{
+ return __x < __y ? 0 : __x - __y;
+}
+
+__MATH_INLINE float fdimf (float __x, float __y);
+__MATH_INLINE float
+fdimf (float __x, float __y)
+{
+ return __x < __y ? 0 : __x - __y;
+}
+
+#endif /* __USE_ISOC9X */
+#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
+#endif /* __GNUC__ */
diff --git a/sysdeps/sparc/sparc32/Implies b/sysdeps/sparc/sparc32/Implies
index 39a34c5f57..ae984a8257 100644
--- a/sysdeps/sparc/sparc32/Implies
+++ b/sysdeps/sparc/sparc32/Implies
@@ -1 +1,4 @@
wordsize-32
+# SPARC uses IEEE 754 floating point.
+ieee754/flt-32
+ieee754/dbl-64
diff --git a/sysdeps/sparc/bits/wordsize.h b/sysdeps/sparc/sparc32/bits/wordsize.h
index 2ad12e1e7f..2ad12e1e7f 100644
--- a/sysdeps/sparc/bits/wordsize.h
+++ b/sysdeps/sparc/sparc32/bits/wordsize.h
diff --git a/sysdeps/sparc/sparc32/fpu/bits/huge_val.h b/sysdeps/sparc/sparc32/fpu/bits/huge_val.h
new file mode 100644
index 0000000000..673d6f0532
--- /dev/null
+++ b/sysdeps/sparc/sparc32/fpu/bits/huge_val.h
@@ -0,0 +1,100 @@
+/* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity).
+ Used by <stdlib.h> and <math.h> functions for overflow.
+ Copyright (C) 1992, 1995, 1996, 1997, 1999 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 _MATH_H
+# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
+#endif
+
+#include <features.h>
+#include <bits/wordsize.h>
+
+/* 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;
+
+# define __HUGE_VAL_bytes { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 }
+
+static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
+# define HUGE_VAL (__huge_val.__d)
+
+#endif /* GCC. */
+
+
+/* ISO C 9X extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */
+
+#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;
+
+# define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 }
+
+static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
+# define HUGE_VALF (__huge_valf.__f)
+
+# endif /* GCC. */
+
+#if __WORDSIZE == 32
+
+/* Sparc32 has IEEE 754 64bit long double */
+# define HUGE_VALL HUGE_VAL
+
+#else
+
+/* Sparc64 uses IEEE 754 128bit long double */
+
+#ifdef __GNUC__
+
+# define HUGE_VALL \
+ (__extension__ \
+ ((union { struct { unsigned long __h, __l; } __i; long double __d; }) \
+ { __i: { __h: 0x7fff000000000000UL, __l: 0 } }).__d)
+
+#else /* not GCC */
+
+typedef union { unsigned char __c[16]; long double __d; } __huge_vall_t;
+
+# define __HUGE_VALL_bytes { 0x7f, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+
+static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes };
+# define HUGE_VALL (__huge_vall.__d)
+
+#endif /* GCC. */
+
+#endif
+
+#endif /* __USE_ISOC9X. */
diff --git a/sysdeps/sparc/sparc64/Implies b/sysdeps/sparc/sparc64/Implies
index a8cae95f9d..5b293ba87d 100644
--- a/sysdeps/sparc/sparc64/Implies
+++ b/sysdeps/sparc/sparc64/Implies
@@ -1 +1,5 @@
wordsize-64
+# SPARC uses IEEE 754 floating point.
+ieee754/flt-32
+ieee754/dbl-64
+ieee754/ldbl-128
diff --git a/sysdeps/sparc/sparc64/Makefile b/sysdeps/sparc/sparc64/Makefile
index 656274d75c..312e59ea21 100644
--- a/sysdeps/sparc/sparc64/Makefile
+++ b/sysdeps/sparc/sparc64/Makefile
@@ -1,11 +1,2 @@
-# The Sparc`long double' is a distinct type we support.
-#long-double-fcts = yes
-
-# But the support for ieee quads is so bad we just skip the whole thing.
-# XXX This is only a temporary hack.
-omit-long-double-fcts = yes
-
-# But we do need these few functions to even link stdio proggies
-ifeq ($(subdir),math)
-sysdep_routines += s_isinfl s_isnanl s_finitel s_signbitl
-endif
+# The Sparc `long double' is a distinct type we support.
+long-double-fcts = yes
diff --git a/sysdeps/sparc/sparc64/addmul_1.S b/sysdeps/sparc/sparc64/addmul_1.S
index 6782db77df..db8f53656e 100644
--- a/sysdeps/sparc/sparc64/addmul_1.S
+++ b/sysdeps/sparc/sparc64/addmul_1.S
@@ -1,7 +1,7 @@
/* SPARC v9 __mpn_addmul_1 -- Multiply a limb vector with a single limb and
add the product to a second limb vector.
- Copyright (C) 1996 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1999 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
@@ -31,29 +31,26 @@
ENTRY(__mpn_addmul_1)
- !#PROLOGUE# 0
save %sp,-192,%sp
- !#PROLOGUE# 1
sub %g0,%i2,%o7
- sllx %o7,3,%g5
- sub %i1,%g5,%o3
- sub %i0,%g5,%o4
mov 0,%o0 ! zero cy_limb
-
+ sllx %o7,3,%o7
+ sethi %hi(0x80000000),%o2
srl %i3,0,%o1 ! extract low 32 bits of s2_limb
+ sub %i1,%o7,%o3
srlx %i3,32,%i3 ! extract high 32 bits of s2_limb
- mov 1,%o2
- sllx %o2,32,%o2 ! o2 = 0x100000000
+ sub %i0,%o7,%o4
+ add %o2,%o2,%o2 ! o2 = 0x100000000
! hi !
! mid-1 !
! mid-2 !
! lo !
1:
- sllx %o7,3,%g1
- ldx [%o3+%g1],%g5
+ ldx [%o3+%o7],%g5
srl %g5,0,%i0 ! zero hi bits
+ ldx [%o4+%o7],%l1
srlx %g5,32,%g5
mulx %o1,%i0,%i4 ! lo product
mulx %i3,%i0,%i1 ! mid-1 product
@@ -64,25 +61,24 @@ ENTRY(__mpn_addmul_1)
addcc %i1,%l2,%i1 ! add mid products
mov 0,%l0 ! we need the carry from that add...
movcs %xcc,%o2,%l0 ! ...compute it and...
+ sllx %i1,32,%i0 ! align low bits of mid product
add %i5,%l0,%i5 ! ...add to bit 32 of the hi product
- sllx %i1,32,%i0 ! align low bits of mid product
srl %i4,0,%g5 ! zero high 32 bits of lo product
add %i0,%g5,%i0 ! combine into low 64 bits of result
srlx %i1,32,%i1 ! extract high bits of mid product...
+ addcc %i0,%o0,%i0 ! add cy_limb to low 64 bits of result
add %i5,%i1,%i1 ! ...and add them to the high result
- addcc %i0,%o0,%i0 ! add cy_limb to low 64 bits of result
mov 0,%g5
movcs %xcc,1,%g5
- add %o7,1,%o7
- ldx [%o4+%g1],%l1
addcc %l1,%i0,%i0
- movcs %xcc,1,%g5
- stx %i0,[%o4+%g1]
- brnz %o7,1b
+ stx %i0,[%o4+%o7]
+ add %g5,1,%l1
+ movcs %xcc,%l1,%g5
+ addcc %o7,8,%o7
+ bne,pt %xcc,1b
add %i1,%g5,%o0 ! compute new cy_limb
- mov %o0,%i0
jmpl %i7+8, %g0
- restore
+ restore %o0,%g0,%o0
END(__mpn_addmul_1)
diff --git a/sysdeps/sparc/sparc64/bits/wordsize.h b/sysdeps/sparc/sparc64/bits/wordsize.h
new file mode 100644
index 0000000000..2ad12e1e7f
--- /dev/null
+++ b/sysdeps/sparc/sparc64/bits/wordsize.h
@@ -0,0 +1,7 @@
+/* Determine the wordsize from the preprocessor defines. */
+
+#if defined __sparc_v9__ || defined __arch64__ || defined __sparcv9
+# define __WORDSIZE 64
+#else
+# define __WORDSIZE 32
+#endif
diff --git a/sysdeps/sparc/sparc64/fpu/bits/huge_val.h b/sysdeps/sparc/sparc64/fpu/bits/huge_val.h
new file mode 100644
index 0000000000..673d6f0532
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/bits/huge_val.h
@@ -0,0 +1,100 @@
+/* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity).
+ Used by <stdlib.h> and <math.h> functions for overflow.
+ Copyright (C) 1992, 1995, 1996, 1997, 1999 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 _MATH_H
+# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
+#endif
+
+#include <features.h>
+#include <bits/wordsize.h>
+
+/* 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;
+
+# define __HUGE_VAL_bytes { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 }
+
+static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
+# define HUGE_VAL (__huge_val.__d)
+
+#endif /* GCC. */
+
+
+/* ISO C 9X extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */
+
+#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;
+
+# define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 }
+
+static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
+# define HUGE_VALF (__huge_valf.__f)
+
+# endif /* GCC. */
+
+#if __WORDSIZE == 32
+
+/* Sparc32 has IEEE 754 64bit long double */
+# define HUGE_VALL HUGE_VAL
+
+#else
+
+/* Sparc64 uses IEEE 754 128bit long double */
+
+#ifdef __GNUC__
+
+# define HUGE_VALL \
+ (__extension__ \
+ ((union { struct { unsigned long __h, __l; } __i; long double __d; }) \
+ { __i: { __h: 0x7fff000000000000UL, __l: 0 } }).__d)
+
+#else /* not GCC */
+
+typedef union { unsigned char __c[16]; long double __d; } __huge_vall_t;
+
+# define __HUGE_VALL_bytes { 0x7f, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+
+static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes };
+# define HUGE_VALL (__huge_vall.__d)
+
+#endif /* GCC. */
+
+#endif
+
+#endif /* __USE_ISOC9X. */