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Re: float_patch
- To: jj at ultra dot linux dot cz, gcc-patches at gcc dot gnu dot org
- Subject: Re: float_patch
- From: Richard Henderson <rth at cygnus dot com>
- Date: Mon, 2 Aug 1999 16:04:29 -0700
Applied.
r~
> As sparc-*-linux uses long double == double 64bit IEEE, while
> sparc64-*-linux uses 128bit IEEE long double and both targets are supported
> by the same compiler, I had to create a separate float-sparc.h for this
> case, which uses C preprocessor macros to either define all LDBL* constants
> to DBL*, or define the same LDBL* constants as float-i128.h does. Otherwise
> either sparc32 or sparc64 compiles will be broken in the BI_ARCH compiler.
>
> 1999-08-02 Jakub Jelinek <jj@ultra.linux.cz>
>
> * config/float-sparc.h: New file.
> * configure.in: Use float_format=sparc for sparc-*-linux-gnulibc1,
> sparc-*-linux-gnu and sparc64-*-linux*.
>
> --- gcc/config/float-sparc.h.jj1 Mon Aug 2 10:02:36 1999
> +++ gcc/config/float-sparc.h Mon Aug 2 10:02:36 1999
> @@ -0,0 +1,122 @@
> +/* float.h for target with IEEE 32, 64 and 128 bit SPARC floating point formats
> + (on sparc-linux long double is 64 bit, while on sparc64-linux 128 bit) */
> +#ifndef _FLOAT_H_
> +#define _FLOAT_H_
> +/* Produced by enquire version 4.3, CWI, Amsterdam */
> +
> + /* Radix of exponent representation */
> +#undef FLT_RADIX
> +#define FLT_RADIX 2
> + /* Number of base-FLT_RADIX digits in the significand of a float */
> +#undef FLT_MANT_DIG
> +#define FLT_MANT_DIG 24
> + /* Number of decimal digits of precision in a float */
> +#undef FLT_DIG
> +#define FLT_DIG 6
> + /* Addition rounds to 0: zero, 1: nearest, 2: +inf, 3: -inf, -1: unknown */
> +#undef FLT_ROUNDS
> +#define FLT_ROUNDS 1
> + /* Difference between 1.0 and the minimum float greater than 1.0 */
> +#undef FLT_EPSILON
> +#define FLT_EPSILON 1.19209290e-07F
> + /* Minimum int x such that FLT_RADIX**(x-1) is a normalised float */
> +#undef FLT_MIN_EXP
> +#define FLT_MIN_EXP (-125)
> + /* Minimum normalised float */
> +#undef FLT_MIN
> +#define FLT_MIN 1.17549435e-38F
> + /* Minimum int x such that 10**x is a normalised float */
> +#undef FLT_MIN_10_EXP
> +#define FLT_MIN_10_EXP (-37)
> + /* Maximum int x such that FLT_RADIX**(x-1) is a representable float */
> +#undef FLT_MAX_EXP
> +#define FLT_MAX_EXP 128
> + /* Maximum float */
> +#undef FLT_MAX
> +#define FLT_MAX 3.40282347e+38F
> + /* Maximum int x such that 10**x is a representable float */
> +#undef FLT_MAX_10_EXP
> +#define FLT_MAX_10_EXP 38
> +
> + /* Number of base-FLT_RADIX digits in the significand of a double */
> +#undef DBL_MANT_DIG
> +#define DBL_MANT_DIG 53
> + /* Number of decimal digits of precision in a double */
> +#undef DBL_DIG
> +#define DBL_DIG 15
> + /* Difference between 1.0 and the minimum double greater than 1.0 */
> +#undef DBL_EPSILON
> +#define DBL_EPSILON 2.2204460492503131e-16
> + /* Minimum int x such that FLT_RADIX**(x-1) is a normalised double */
> +#undef DBL_MIN_EXP
> +#define DBL_MIN_EXP (-1021)
> + /* Minimum normalised double */
> +#undef DBL_MIN
> +#define DBL_MIN 2.2250738585072014e-308
> + /* Minimum int x such that 10**x is a normalised double */
> +#undef DBL_MIN_10_EXP
> +#define DBL_MIN_10_EXP (-307)
> + /* Maximum int x such that FLT_RADIX**(x-1) is a representable double */
> +#undef DBL_MAX_EXP
> +#define DBL_MAX_EXP 1024
> + /* Maximum double */
> +#undef DBL_MAX
> +#define DBL_MAX 1.7976931348623157e+308
> + /* Maximum int x such that 10**x is a representable double */
> +#undef DBL_MAX_10_EXP
> +#define DBL_MAX_10_EXP 308
> +
> +#if defined(__sparc_v9__) || defined(__sparcv9) || defined(__arch64__)
> +
> + /* Number of base-FLT_RADIX digits in the significand of a long double */
> +#undef LDBL_MANT_DIG
> +#define LDBL_MANT_DIG 113
> + /* Number of decimal digits of precision in a long double */
> +#undef LDBL_DIG
> +#define LDBL_DIG 33
> + /* Difference between 1.0 and the minimum long double greater than 1.0 */
> +#undef LDBL_EPSILON
> +#define LDBL_EPSILON 1.925929944387235853055977942584927319E-34L
> + /* Minimum int x such that FLT_RADIX**(x-1) is a normalised long double */
> +#undef LDBL_MIN_EXP
> +#define LDBL_MIN_EXP (-16381)
> + /* Minimum normalised long double */
> +#undef LDBL_MIN
> +#define LDBL_MIN 3.362103143112093506262677817321752603E-4932L
> + /* Minimum int x such that 10**x is a normalised long double */
> +#undef LDBL_MIN_10_EXP
> +#define LDBL_MIN_10_EXP (-4931)
> + /* Maximum int x such that FLT_RADIX**(x-1) is a representable long double */
> +#undef LDBL_MAX_EXP
> +#define LDBL_MAX_EXP 16384
> + /* Maximum long double */
> +#undef LDBL_MAX
> +#define LDBL_MAX 1.189731495357231765085759326628007016E+4932L
> + /* Maximum int x such that 10**x is a representable long double */
> +#undef LDBL_MAX_10_EXP
> +#define LDBL_MAX_10_EXP 4932
> +
> +#else /* sparc32 */
> +
> +#undef LDBL_MANT_DIG
> +#define LDBL_MANT_DIG DBL_MANT_DIG
> +#undef LDBL_DIG
> +#define LDBL_DIG DBL_DIG
> +#undef LDBL_EPSILON
> +#define LDBL_EPSILON DBL_EPSILON
> +#undef LDBL_MIN_EXP
> +#define LDBL_MIN_EXP DBL_MIN_EXP
> +#undef LDBL_MIN
> +#define LDBL_MIN DBL_MIN
> +#undef LDBL_MIN_10_EXP
> +#define LDBL_MIN_10_EXP DBL_MIN_10_EXP
> +#undef LDBL_MAX_EXP
> +#define LDBL_MAX_EXP DBL_MAX_EXP
> +#undef LDBL_MAX
> +#define LDBL_MAX DBLX_MAX
> +#undef LDBL_MAX_10_EXP
> +#define LDBL_MAX_10_EXP DBL_MAX_10_EXP
> +
> +#endif /* sparc32 */
> +
> +#endif /* _FLOAT_H_ */
> --- gcc/configure.in.jj1 Sat Jul 31 20:25:30 1999
> +++ gcc/configure.in Mon Aug 2 10:02:36 1999
> @@ -3130,6 +3130,7 @@ changequote([,])dnl
> tmake_file="t-linux t-linux-gnulibc1"
> extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
> gnu_ld=yes
> + float_format=sparc
> ;;
> sparc-*-linux-gnu*) # Sparc's running GNU/Linux, libc6
> xm_file="${xm_file} sparc/xm-linux.h"
> @@ -3141,6 +3142,7 @@ changequote([,])dnl
> if test x$enable_threads = xyes; then
> thread_file='posix'
> fi
> + float_format=sparc
> ;;
> sparc-*-lynxos*)
> if test x$gas = xyes
> @@ -3283,6 +3285,7 @@ changequote([,])dnl
> xmake_file=x-linux
> extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
> gnu_ld=yes
> + float_format=sparc
> ;;
> # This hasn't been upgraded to GCC 2.
> # tahoe-harris-*) # Harris tahoe, using COFF.
> --- gcc/configure.jj1 Sat Jul 31 20:25:30 1999
> +++ gcc/configure Mon Aug 2 10:02:54 1999
> @@ -5433,6 +5433,7 @@ for machine in $build $host $target; do
> tmake_file="t-linux t-linux-gnulibc1"
> extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
> gnu_ld=yes
> + float_format=sparc
> ;;
> sparc-*-linux-gnu*) # Sparc's running GNU/Linux, libc6
> xm_file="${xm_file} sparc/xm-linux.h"
> @@ -5444,6 +5445,7 @@ for machine in $build $host $target; do
> if test x$enable_threads = xyes; then
> thread_file='posix'
> fi
> + float_format=sparc
> ;;
> sparc-*-lynxos*)
> if test x$gas = xyes
> @@ -5584,6 +5586,7 @@ for machine in $build $host $target; do
> xmake_file=x-linux
> extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
> gnu_ld=yes
> + float_format=sparc
> ;;
> # This hasn't been upgraded to GCC 2.
> # tahoe-harris-*) # Harris tahoe, using COFF.