gcc/libgcc/fp-bit.h

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/* Header file for fp-bit.c. */
/* Copyright (C) 2000-2019 Free Software Foundation, Inc.
2003-09-27 12:48:30 +08:00
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC 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 General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_FP_BIT_H
#define GCC_FP_BIT_H
/* Defining FINE_GRAINED_LIBRARIES allows one to select which routines
from this file are compiled via additional -D options.
This avoids the need to pull in the entire fp emulation library
when only a small number of functions are needed.
If FINE_GRAINED_LIBRARIES is not defined, then compile every
suitable routine. */
#ifndef FINE_GRAINED_LIBRARIES
#define L_pack_df
#define L_unpack_df
#define L_pack_sf
#define L_unpack_sf
#define L_addsub_sf
#define L_addsub_df
#define L_mul_sf
#define L_mul_df
#define L_div_sf
#define L_div_df
#define L_fpcmp_parts_sf
#define L_fpcmp_parts_df
#define L_compare_sf
#define L_compare_df
#define L_eq_sf
#define L_eq_df
#define L_ne_sf
#define L_ne_df
#define L_gt_sf
#define L_gt_df
#define L_ge_sf
#define L_ge_df
#define L_lt_sf
#define L_lt_df
#define L_le_sf
#define L_le_df
#define L_unord_sf
#define L_unord_df
#define L_usi_to_sf
#define L_usi_to_df
#define L_si_to_sf
#define L_si_to_df
#define L_sf_to_si
#define L_df_to_si
#define L_f_to_usi
#define L_df_to_usi
#define L_negate_sf
#define L_negate_df
#define L_make_sf
#define L_make_df
#define L_sf_to_df
#define L_df_to_sf
#ifdef FLOAT
#define L_thenan_sf
#else
#define L_thenan_df
#endif
#endif /* ! FINE_GRAINED_LIBRARIES */
#if __LDBL_MANT_DIG__ == 113 || __LDBL_MANT_DIG__ == 106
[multiple changes] 2006-01-27 Jakub Jelinek <jakub@redhat.com> PR target/25864 * libgcc-std.ver: Add GCC_4.1.0 symbol version. * config/rs6000/t-linux64 (TARGET_LIBGCC2_CFLAGS): Only append -mno-minimal-toc to previous content. (bispecs): Remove goal. * config/rs6000/ppc64-fp.c: Define TMODES before including fp-bit.h. * config/rs6000/darwin-ldouble.c: Don't provide _xlq*@GCC_3.4 compatibility aliases on powerpc-*-*gnu*. * config/rs6000/libgcc-ppc-glibc.ver: New file. * config/rs6000/t-ppccomm (SHLIB_MAPFILES): Append libgcc-ppc-glibc.ver on powerpc*-*-*gnu*. (TARGET_LIBGCC2_CFLAGS): Append -specs=ldblspecs. (ldblspecs): New goal. * config/rs6000/t-linux64 (SHLIB_MAPFILES): Removed. * mklibgcc.in: If $TPBIT is empty, don't compile _sf_to_tf and _df_to_tf. * config/fp-bit.h (TMODES): Don't define if none of TFLOAT, L_sf_to_tf or L_df_to_tf is defined. 2006-01-27 David Edelsohn <edelsohn@gnu.org> Alan Modra <amodra@bigpond.net.au> PR target/25864 * config/rs6000/linux.h (POWERPC_LINUX): Define. * config/rs6000/linux64.h (POWERPC_LINUX): Define. * config/rs6000/darwin-ldouble.c: Build on 32-bit PowerPC. * config/rs6000/darwin.h (TARGET_IEEEQUAD): Define to zero. * config/rs6000/aix.h (TARGET_IEEEQUAD): Define to zero. * config/rs6000/rs6000.c (rs6000_ieeequad): New variable. (rs6000_override_options): Initialize rs6000_ieeequad. Initialize TFmode format to ibm_extended_format if not TARGET_IEEEQUAD. (rs6000_handle_option): Accept -mabi= ibmlongdouble and ieeelongdouble. (rs6000_emit_move): Move !TARGET_IEEEQUAD as two parts. (rs6000_return_in_memory): Only return IEEEQUAD in memory. (function_arg_advance): IBM long double passed in two FPRs, not split. (function_arg): IBM long double passed in FPRs. (rs6000_pass_by_reference): Only IEEEQUAD passed by reference. (rs6000_gimplify_va_arg): IBM long double passed in two FPRs. Only multireg GPR aligned. (rs6000_init_libfuncs): Enable IBM long double functions if not IEEEQUAD. (rs6000_generate_compare): Use IBM long double compare if not TARGET_IEEEQUAD. * config/rs6000/rs6000.h (rs6000_ieeequad): Declare. (TARGET_IEEEQUAD): Define. (CANNOT_CHANGE_MODE_CLASS): Any mode larger than doubleword if not TARGET_IEEEQUAD. * config/rs6000/rs6000.md: Enable TFmode patterns if !TARGET_IEEEQUAD. * config/rs6000/t-ppccomm (LIB2FUNCS_EXTRA): Add darwin-ldouble.c. * config/rs6000/svr4.h (SUBTARGET_OVERRIDE_OPTIONS): -msoft-float and -mlong-double-128 are incompatible. * doc/invoke.texi (-mabi): Collect options together. Add ibmlongdouble and ieeelongdouble. From-SVN: r110303
2006-01-28 03:59:49 +08:00
# if defined(TFLOAT) || defined(L_sf_to_tf) || defined(L_df_to_tf)
# define TMODES
# endif
#endif
typedef float SFtype __attribute__ ((mode (SF)));
typedef float DFtype __attribute__ ((mode (DF)));
#ifdef TMODES
typedef float TFtype __attribute__ ((mode (TF)));
#endif
typedef int HItype __attribute__ ((mode (HI)));
typedef int SItype __attribute__ ((mode (SI)));
typedef int DItype __attribute__ ((mode (DI)));
#ifdef TMODES
typedef int TItype __attribute__ ((mode (TI)));
#endif
/* The type of the result of a floating point comparison. This must
match `__libgcc_cmp_return__' in GCC for the target. */
#ifndef CMPtype
typedef int CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
#endif
typedef unsigned int UHItype __attribute__ ((mode (HI)));
typedef unsigned int USItype __attribute__ ((mode (SI)));
typedef unsigned int UDItype __attribute__ ((mode (DI)));
#ifdef TMODES
typedef unsigned int UTItype __attribute__ ((mode (TI)));
#endif
#define MAX_USI_INT (~(USItype)0)
#define MAX_SI_INT ((SItype) (MAX_USI_INT >> 1))
#define BITS_PER_SI (4 * __CHAR_BIT__)
#ifdef TMODES
#define MAX_UDI_INT (~(UDItype)0)
#define MAX_DI_INT ((DItype) (MAX_UDI_INT >> 1))
#define BITS_PER_DI (8 * __CHAR_BIT__)
#endif
#ifdef FLOAT_ONLY
#define NO_DI_MODE
#endif
Makefile.in (FPBIT_FUNCS, [...]): Remove. gcc: * Makefile.in (FPBIT_FUNCS, DPBIT_FUNCS, TPBIT_FUNCS): Remove. (libgcc-support): Remove $(FPBIT), $(DPBIT), $(TPBIT) dependencies. (libgcc.mvars): Remove FPBIT, FPBIT_FUNCS, DPBIT, DPBIT_FUNCS, TPBIT, TPBIT_FUNCS. * config/fp-bit.c, config/fp-bit.h: Move to ../libgcc. * config/arm/t-strongarm-elf (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/arm/t-vxworks: Likewise. * config/arm/t-wince-pe: Likewise. * config/avr/t-avr (fp-bit.c, FPBIT): Remove. * config/bfin/t-bfin (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/bfin/t-bfin-elf: Likewise. * config/bfin/t-bfin-linux: Likewise. * config/bfin/t-bfin-uclinux: Likewise. * config/cris/t-cris (FPBIT, DPBIT, dp-bit.c, tmplibgcc_fp_bit.c): Remove. * config/fr30/t-fr30: Likewise. * config/frv/t-frv: Likewise. * config/h8300/t-h8300 (FPBIT, fp-bit.c): Remove. * config/iq2000/t-iq2000 (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/m32c/t-m32c: Likewise. * config/m32r/t-linux: (LIB2FUNCS_EXTRA, fp-bit.c, dp-bit.c): Remove. * config/m32r/t-m32r (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/mcore/t-mcore: Likewise. * config/mep/t-mep: Likewise. * config/microblaze/t-microblaze: Likewise. * config/mips/t-linux64 (TPBIT, tp-bit.c): Remove. * config/mips/t-mips (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/mips/t-sdemtk (FPBIT, DPBIT): Remove. * config/mips/t-sr71k (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/mn10300/t-linux: Remove. * config/mn10300/t-mn10300 (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/pdp11/t-pdp11: Likewise. * config/picochip/t-picochip (FPBIT, fp-bit.c): Remove. * config/rs6000/ppc64-fp.c: Move to ../libgcc/config/rs6000. * config/rs6000/t-aix43 (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. (LIB2FUNCS_EXTRA): Remove $(srcdir)/config/rs6000/ppc64-fp.c. * config/rs6000/t-aix52: Likewise. * config/rs6000/t-darwin (LIB2FUNCS_EXTRA): Remove $(srcdir)/config/rs6000/ppc64-fp.c. * config/rs6000/t-fprules-fpbit: Remove. * config/rs6000/t-linux64 (LIB2FUNCS_EXTRA): Remove. * config/rs6000/t-lynx (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/sh/t-netbsd (FPBIT, DPBIT): Remove. * config/sh/t-sh (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/sparc/t-elf: Likewise. * config/sparc/t-leon: Likewise. * config/sparc/t-leon3: Likewise. * config/spu/t-spu-elf: Likewise. (DPBIT_FUNCS): Remove. * config/stormy16/t-stormy16 (FPBIT, DPBIT, dp-bit.c, fp-bit.c): Remove. * config/v850/t-v850: Likewise. * config.gcc (avr-*-rtems*): Add avr/avr-lib.h to libgcc_tm_file. (avr-*-*): Likewise. (h8300-*-rtems*): Set libgcc_tm_file. (h8300-*-elf*): Likewise. (powerpc-*-eabisimaltivec*): Remove rs6000/t-fprules-fpbit from tmake_file. (powerpc-*-eabisim*): Likewise. (powerpc-*-elf*): Likewise. (powerpc-*-eabialtivec*): Likewise. (powerpc-xilinx-eabi*): Likewise. (powerpc-*-eabi*): Likewise. (powerpc-*-rtems*): Likewise. (powerpc-wrs-vxworks, powerpc-wrs-vxworksae): Likewise. (powerpcle-*-elf*): Likewise. (powerpcle-*-eabisim*): Likewise. (powerpcle-*-eabi*): Likewise. (rx-*-elf*): Add rx/rx-lib.h to libgcc_tm_file. (am33_2.0-*-linux*): Remove mn10300/t-linux from tmake_file. * doc/fragments.texi (Target Fragment, Floating Point Emulation): Remove. gcc/po: * EXCLUDES (config/fp-bit.c, config/fp-bit.h): Remove. libgcc: * Makefile.in (double_type_size, long_double_type_size): Set. Remove $(fpbit-in-libgcc) support. (FPBIT_FUNCS, DPBIT_FUNCS, TPBIT_FUNCS): New variables. (fpbit-src): New variable. ($(fpbit-o), $(fpbit-s-o)): Use $(fpbit-src) instead of $(FPBIT). Compile with -DFLOAT $(FPBIT_CFLAGS). Use $<. ($(dpbit-o), $(dpbit-s-o)): Use $(fpbit-src) instead of $(DPBIT). Compile with $(FPBIT_CFLAGS). Use $<. ($(tpbit-o), $(tpbit-s-o): Use $(fpbit-src) instead of $(TPBIT). Compile with -DFLOAT $(TPBIT_CFLAGS). Use $<. * configure.ac (double_type_size, long_double_type_size): Determine and substitute. * configure: Regenerate. * fp-bit.c, fp-bit.h: New files. * config/avr/avr-lib.h, config/h8300/h8300-lib.h: New files. * config/mips/t-irix6 (TPBIT, $(gcc_objdir)/tp-bit.c): Remove. * config/mips/t-mips: New file. * config/mips/t-sdemtk: New file. * config/rs6000/ppc64-fp.c: New file. * config/rs6000/t-darwin (LIB2ADD): Add $(srcdir)/config/rs6000/ppc64-fp.c. * config/rs6000/t-ppc64-fp: New file. * config/rx/rx-lib.h: New file. * config/rx/t-rx (FPBIT): Set to true. ($(gcc_objdir)/fp-bit.c): Remove. (DPBIT): Set to true only with -m64bit-doubles. ($(gcc_objdir)/dp-bit.c): Remove. * config/sparc/t-softfp: Remove. * config/spu/t-elf: New file. * config/t-fdpbit, config/t-fpbit: New files. * config.host (m32c*-*-*): Add t-fdpbit to tmake_file. (mips*-*-*): Likewise. (arm-wrs-vxworks): Likewise. (arm*-*-freebsd*): Likewise. (avr-*-rtems*): Add t-fpbit to tmake_file. (avr-*-*): Likewise. (bfin*-elf*): Add t-fdpbit to tmake_file. (bfin*-uclinux*): Likewise. (bfin*-linux-uclibc*): Likewise. (bfin*-rtems*): New case. Add t-fdpbit to tmake_file. (bfin*-*): Add t-fdpbit to tmake_file. (crisv32-*-elf): Likewise. (cris-*-linux*): Likewise. (fr30-*-elf): Likewise. (frv-*-elf, frv-*-*linux*): Likewise. (h8300-*-rtems*, h8300-*-elf*): Add t-fpbit to tmake_file. (iq2000*-*-elf*): Add t-fdpbit to tmake_file. (m32r-*-elf*): Likewise. (m32rle-*-elf*): Likewise. (m32r-*-linux*): Likewise. (m32rle-*-linux*): Likewise. (mcore-*-elf): Add t-fdpbit to tmake_file. (microblaze*-*-*): Likewise. (mips-sgi-irix6.5*): Add t-tpbit to tmake_file. (mips*-*-netbsd*): Add mips/t-mips to tmake_file. (mips64*-*-linux*): Also handle mipsisa64*-*-linux*. Fix typo. Add mips/t-tpbit to tmake-file. (mips*-*-linux*): Fix typo. (mips*-sde-elf*): New case Add mips/t-sdemtk unless using newlib. (mipsisa64sr71k-*-elf*): Add t-fdpbit to tmake_file. (mipsisa64sb1-*-elf*): Add mips/t-mips to tmake_file. (mn10300-*-*): Likewise. (pdp11-*-*): Likewise. (picochip-*-*): Add t-fpbit to tmake_file. (powerpc-*-eabisimaltivec*): Likewise. (powerpc-*-eabisim*): Likewise. (powerpc-*-elf*): Likewise. (powerpc-*-eabialtivec*): Likewise. (powerpc-xilinx-eabi*): New case. Add t-fdpbit to tmake_file. (powerpc-*-eabi*): Add t-fdpbit to tmake_file. (powerpc-*-rtems*): Likewise. (powerpc-*-linux*, powerpc64-*-linux*): Add rs6000/t-ppc64-fp to tmake_file. (powerpc-wrs-vxworks, powerpc-wrs-vxworksae): Add t-fdpbit to tmake_file. (powerpc-*-lynxos*): Likewise. (powerpcle-*-elf*): Likewise. (powerpcle-*-eabisim*): Likewise. (powerpcle-*-eabi*): Likewise. (rs6000-ibm-aix4.[3456789]*, powerpc-ibm-aix4.[3456789]*): Add t-fdpbit, rs6000/t-ppc64-fp to tmake_file. (rs6000-ibm-aix5.1.*, powerpc-ibm-aix5.1.*): Likewise. (rs6000-ibm-aix[56789].*, powerpc-ibm-aix[56789].*): Likewise. (rx-*-elf): Add t-fdpbit to tmake_file. (sh-*-elf*, sh[12346l]*-*-elf*, sh-*-linux*) (sh[2346lbe]*-*-linux*, sh-*-netbsdelf*, shl*-*-netbsdelf*) (sh5-*-netbsd*, sh5l*-*-netbsd*, sh64-*-netbsd*) (sh64l*-*-netbsd*): Add t-fdpbit to tmake_file except on sh*-*-netbsd*. (sh-*-rtems*): Add t-fdpbit to tmake_file. (sh-wrs-vxworks): Likewise. (sparc-*-elf*): Replace sparc/t-softfp by t-fdpbit in tmake_file. (sparc-*-linux*): Add t-fdpbit to tmake_file for *-leon*. (sparc-*-rtems*, sparc64-*-rtems*): Split off ... (sparc64-*-rtems*): ... new case. (sparc-*-rtems*): Add t-fdpbit to tmake_file. (spu-*-elf*): Likewise. Add spu/t-elf to tmake_file. (v850*-*-*): Add t-fdpbit to tmake_file. (xstormy16-*-elf): Likewise. (am33_2.0-*-linux*): Add t-fdpbit to tmake_file. (mep*-*-*): Likewise. From-SVN: r177448
2011-08-05 22:53:09 +08:00
#if __BYTE_ORDER__ != __FLOAT_WORD_ORDER__
#define FLOAT_WORD_ORDER_MISMATCH
#endif
#ifdef TFLOAT
# ifndef TMODES
# error "TFLOAT requires long double to have 113 bits of mantissa"
# endif
# define PREFIXFPDP tp
# define PREFIXSFDF tf
# define NGARDS 10L /* Is this right? */
# define GARDROUND 0x1ff
# define GARDMASK 0x3ff
# define GARDMSB 0x200
# define FRAC_NBITS 128
# if __LDBL_MANT_DIG__ == 113 /* IEEE quad */
# define EXPBITS 15
# define EXPBIAS 16383
# define EXPMAX (0x7fff)
# define QUIET_NAN ((TItype)0x8 << 108)
# define FRACHIGH ((TItype)0x8 << 124)
# define FRACHIGH2 ((TItype)0xc << 124)
# define FRACBITS 112
# endif
# if __LDBL_MANT_DIG__ == 106 /* IBM extended (double+double) */
# define EXPBITS 11
# define EXPBIAS 1023
# define EXPMAX (0x7ff)
# define QUIET_NAN ((TItype)0x8 << (48 + 64))
# define FRACHIGH ((TItype)0x8 << 124)
# define FRACHIGH2 ((TItype)0xc << 124)
# define FRACBITS 105
# define HALFFRACBITS 52
# define HALFSHIFT 64
# endif
# define pack_d __pack_t
# define unpack_d __unpack_t
# define __fpcmp_parts __fpcmp_parts_t
typedef UTItype fractype;
typedef UDItype halffractype;
typedef USItype qrtrfractype;
#define qrtrfractype qrtrfractype
typedef TFtype FLO_type;
typedef TItype intfrac;
#elif defined FLOAT
# define NGARDS 7L
# define GARDROUND 0x3f
# define GARDMASK 0x7f
# define GARDMSB 0x40
# define EXPBITS 8
# define EXPBIAS 127
# define FRACBITS 23
# define EXPMAX (0xff)
# define QUIET_NAN 0x400000L
# define FRAC_NBITS 32
# define FRACHIGH 0x80000000L
# define FRACHIGH2 0xc0000000L
# define pack_d __pack_f
# define unpack_d __unpack_f
# define __fpcmp_parts __fpcmp_parts_f
typedef USItype fractype;
typedef UHItype halffractype;
typedef SFtype FLO_type;
typedef SItype intfrac;
#else
# define PREFIXFPDP dp
# define PREFIXSFDF df
# define NGARDS 8L
# define GARDROUND 0x7f
# define GARDMASK 0xff
# define GARDMSB 0x80
# define EXPBITS 11
# define EXPBIAS 1023
# define FRACBITS 52
# define EXPMAX (0x7ff)
# define QUIET_NAN 0x8000000000000LL
# define FRAC_NBITS 64
# define FRACHIGH 0x8000000000000000LL
# define FRACHIGH2 0xc000000000000000LL
# define pack_d __pack_d
# define unpack_d __unpack_d
# define __fpcmp_parts __fpcmp_parts_d
typedef UDItype fractype;
typedef USItype halffractype;
typedef DFtype FLO_type;
typedef DItype intfrac;
#endif /* FLOAT */
#ifdef TFLOAT
# define add __addtf3
# define sub __subtf3
# define multiply __multf3
# define divide __divtf3
# define compare __cmptf2
# define _eq_f2 __eqtf2
# define _ne_f2 __netf2
# define _gt_f2 __gttf2
# define _ge_f2 __getf2
# define _lt_f2 __lttf2
# define _le_f2 __letf2
# define _unord_f2 __unordtf2
# define usi_to_float __floatunsitf
# define si_to_float __floatsitf
# define float_to_si __fixtfsi
# define float_to_usi __fixunstfsi
# define negate __negtf2
# define tf_to_sf __trunctfsf2
# define tf_to_df __trunctfdf2
#elif defined FLOAT
# define add __addsf3
# define sub __subsf3
# define multiply __mulsf3
# define divide __divsf3
# define compare __cmpsf2
# define _eq_f2 __eqsf2
# define _ne_f2 __nesf2
# define _gt_f2 __gtsf2
# define _ge_f2 __gesf2
# define _lt_f2 __ltsf2
# define _le_f2 __lesf2
# define _unord_f2 __unordsf2
# define usi_to_float __floatunsisf
# define si_to_float __floatsisf
# define float_to_si __fixsfsi
# define float_to_usi __fixunssfsi
# define negate __negsf2
# define sf_to_df __extendsfdf2
# define sf_to_tf __extendsftf2
#else
# define add __adddf3
# define sub __subdf3
# define multiply __muldf3
# define divide __divdf3
# define compare __cmpdf2
# define _eq_f2 __eqdf2
# define _ne_f2 __nedf2
# define _gt_f2 __gtdf2
# define _ge_f2 __gedf2
# define _lt_f2 __ltdf2
# define _le_f2 __ledf2
# define _unord_f2 __unorddf2
# define usi_to_float __floatunsidf
# define si_to_float __floatsidf
# define float_to_si __fixdfsi
# define float_to_usi __fixunsdfsi
# define negate __negdf2
# define df_to_sf __truncdfsf2
# define df_to_tf __extenddftf2
#endif /* FLOAT */
#ifndef INLINE
#define INLINE __inline__
#endif
/* Preserve the sticky-bit when shifting fractions to the right. */
#define LSHIFT(a, s) { a = (a >> s) | !!(a & (((fractype) 1 << s) - 1)); }
/* numeric parameters */
/* F_D_BITOFF is the number of bits offset between the MSB of the mantissa
of a float and of a double. Assumes there are only two float types.
(double::FRAC_BITS+double::NGARDS-(float::FRAC_BITS+float::NGARDS))
*/
#define F_D_BITOFF (52+8-(23+7))
#ifdef TMODES
# define F_T_BITOFF (__LDBL_MANT_DIG__-1+10-(23+7))
# define D_T_BITOFF (__LDBL_MANT_DIG__-1+10-(52+8))
#endif
#define NORMAL_EXPMIN (-(EXPBIAS)+1)
#define IMPLICIT_1 ((fractype)1<<(FRACBITS+NGARDS))
#define IMPLICIT_2 ((fractype)1<<(FRACBITS+1+NGARDS))
/* common types */
typedef enum
{
CLASS_SNAN,
CLASS_QNAN,
CLASS_ZERO,
CLASS_NUMBER,
CLASS_INFINITY
} fp_class_type;
typedef struct
{
#ifdef SMALL_MACHINE
char class;
unsigned char sign;
short normal_exp;
#else
fp_class_type class;
unsigned int sign;
int normal_exp;
#endif
union
{
fractype ll;
halffractype l[2];
} fraction;
} fp_number_type;
typedef union
{
FLO_type value;
fractype value_raw;
#ifndef FLOAT
# ifdef qrtrfractype
qrtrfractype qwords[4];
# else
halffractype words[2];
# endif
#endif
#ifdef _DEBUG_BITFLOAT
struct
{
unsigned int sign:1 __attribute__ ((packed));
unsigned int exp:EXPBITS __attribute__ ((packed));
fractype fraction:FRACBITS __attribute__ ((packed));
}
bits_big_endian;
struct
{
fractype fraction:FRACBITS __attribute__ ((packed));
unsigned int exp:EXPBITS __attribute__ ((packed));
unsigned int sign:1 __attribute__ ((packed));
}
bits_little_endian;
#endif
}
FLO_union_type;
/* Prototypes. */
#if defined(L_pack_df) || defined(L_pack_sf) || defined(L_pack_tf)
extern FLO_type pack_d (const fp_number_type *);
#endif
extern void unpack_d (FLO_union_type *, fp_number_type *);
#if defined(L_addsub_sf) || defined(L_addsub_df) || defined(L_addsub_tf)
extern FLO_type add (FLO_type, FLO_type);
extern FLO_type sub (FLO_type, FLO_type);
#endif
#if defined(L_mul_sf) || defined(L_mul_df) || defined(L_mul_tf)
extern FLO_type multiply (FLO_type, FLO_type);
#endif
#if defined(L_div_sf) || defined(L_div_df) || defined(L_div_tf)
extern FLO_type divide (FLO_type, FLO_type);
#endif
extern int __fpcmp_parts (fp_number_type *, fp_number_type *);
#if defined(L_compare_sf) || defined(L_compare_df) || defined(L_compare_tf)
extern CMPtype compare (FLO_type, FLO_type);
#endif
#if defined(L_eq_sf) || defined(L_eq_df) || defined(L_eq_tf)
extern CMPtype _eq_f2 (FLO_type, FLO_type);
#endif
#if defined(L_ne_sf) || defined(L_ne_df) || defined(L_ne_tf)
extern CMPtype _ne_f2 (FLO_type, FLO_type);
#endif
#if defined(L_gt_sf) || defined(L_gt_df) || defined(L_gt_tf)
extern CMPtype _gt_f2 (FLO_type, FLO_type);
#endif
#if defined(L_ge_sf) || defined(L_ge_df) || defined(L_ge_tf)
extern CMPtype _ge_f2 (FLO_type, FLO_type);
#endif
#if defined(L_lt_sf) || defined(L_lt_df) || defined(L_lt_tf)
extern CMPtype _lt_f2 (FLO_type, FLO_type);
#endif
#if defined(L_le_sf) || defined(L_le_df) || defined(L_le_tf)
extern CMPtype _le_f2 (FLO_type, FLO_type);
#endif
#if defined(L_unord_sf) || defined(L_unord_df) || defined(L_unord_tf)
extern CMPtype _unord_f2 (FLO_type, FLO_type);
#endif
#if defined(L_si_to_sf) || defined(L_si_to_df) || defined(L_si_to_tf)
extern FLO_type si_to_float (SItype);
#endif
#if defined(L_sf_to_si) || defined(L_df_to_si) || defined(L_tf_to_si)
extern SItype float_to_si (FLO_type);
#endif
#if defined(L_tf_to_usi)
extern USItype float_to_usi (FLO_type);
#endif
#if defined(L_usi_to_sf) || defined(L_usi_to_df) || defined(L_usi_to_tf)
extern FLO_type usi_to_float (USItype);
#endif
#if defined(L_negate_sf) || defined(L_negate_df) || defined(L_negate_tf)
extern FLO_type negate (FLO_type);
#endif
#ifdef FLOAT
#if defined(L_make_sf)
extern SFtype __make_fp (fp_class_type, unsigned int, int, USItype);
#endif
#ifndef FLOAT_ONLY
extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
#if defined(L_sf_to_df)
extern DFtype sf_to_df (SFtype);
#endif
#if defined(L_sf_to_tf) && defined(TMODES)
extern TFtype sf_to_tf (SFtype);
#endif
#endif /* ! FLOAT_ONLY */
#endif /* FLOAT */
#ifndef FLOAT
extern SFtype __make_fp (fp_class_type, unsigned int, int, USItype);
#if defined(L_make_df)
extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
#endif
#if defined(L_df_to_sf)
extern SFtype df_to_sf (DFtype);
#endif
#if defined(L_df_to_tf) && defined(TMODES)
extern TFtype df_to_tf (DFtype);
#endif
#endif /* ! FLOAT */
#ifdef TMODES
extern DFtype __make_dp (fp_class_type, unsigned int, int, UDItype);
extern TFtype __make_tp (fp_class_type, unsigned int, int, UTItype);
#ifdef TFLOAT
#if defined(L_tf_to_sf)
extern SFtype tf_to_sf (TFtype);
#endif
#if defined(L_tf_to_df)
extern DFtype tf_to_df (TFtype);
#endif
#if defined(L_di_to_tf)
extern TFtype di_to_df (DItype);
#endif
#endif /* TFLOAT */
#endif /* TMODES */
#endif /* ! GCC_FP_BIT_H */