X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Freal.h;h=174d2c46abff1d6e64b0e593114231196f54ad2b;hb=0afe563d3f860ea4cf7a22fef1ebc47e1b3f2c86;hp=ea16d0bfac0002d3a302cd56407c0f24f1b09497;hpb=9daf62669477fc6722bb6f7fa7af75a01bb4cd36;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/real.h b/gcc/real.h index ea16d0bfac0..174d2c46abf 100644 --- a/gcc/real.h +++ b/gcc/real.h @@ -1,26 +1,28 @@ /* Definitions of floating-point access for GNU compiler. Copyright (C) 1989, 1991, 1994, 1996, 1997, 1998, - 1999, 2000 Free Software Foundation, Inc. + 1999, 2000, 2002 Free Software Foundation, Inc. -This file is part of GNU CC. +This file is part of GCC. -GNU CC 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 2, or (at your option) -any later version. +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 2, or (at your option) any later +version. -GNU CC 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. +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. You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. */ -#ifndef REAL_H_INCLUDED -#define REAL_H_INCLUDED +#ifndef GCC_REAL_H +#define GCC_REAL_H + +#include "machmode.h" /* Define codes for all the float formats that we know of. */ #define UNKNOWN_FLOAT_FORMAT 0 @@ -39,8 +41,8 @@ Boston, MA 02111-1307, USA. */ #define HOST_FLOAT_FORMAT IEEE_FLOAT_FORMAT #endif -#if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT -#define REAL_INFINITY +#ifndef INTEL_EXTENDED_IEEE_FORMAT +#define INTEL_EXTENDED_IEEE_FORMAT 0 #endif /* If FLOAT_WORDS_BIG_ENDIAN and HOST_FLOAT_WORDS_BIG_ENDIAN are not defined @@ -61,79 +63,79 @@ Boston, MA 02111-1307, USA. */ #endif #endif -/* Defining REAL_ARITHMETIC invokes a floating point emulator - that can produce a target machine format differing by more - than just endian-ness from the host's format. The emulator - is also used to support extended real XFmode. */ #ifndef LONG_DOUBLE_TYPE_SIZE #define LONG_DOUBLE_TYPE_SIZE 64 #endif -#if (LONG_DOUBLE_TYPE_SIZE == 96) || (LONG_DOUBLE_TYPE_SIZE == 128) -#ifndef REAL_ARITHMETIC -#define REAL_ARITHMETIC -#endif +/* MAX_LONG_DOUBLE_TYPE_SIZE is a constant tested by #if. + LONG_DOUBLE_TYPE_SIZE can vary at compiler run time. + So long as macros like REAL_VALUE_TO_TARGET_LONG_DOUBLE cannot + vary too, however, then XFmode and TFmode long double + cannot both be supported at the same time. */ +#ifndef MAX_LONG_DOUBLE_TYPE_SIZE +#define MAX_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE #endif -#ifdef REAL_ARITHMETIC + /* **** Start of software floating point emulator interface macros **** */ -/* Support 80-bit extended real XFmode if LONG_DOUBLE_TYPE_SIZE - has been defined to be 96 in the tm.h machine file. */ -#if (LONG_DOUBLE_TYPE_SIZE == 96) -#define REAL_IS_NOT_DOUBLE -#define REAL_ARITHMETIC -typedef struct { - HOST_WIDE_INT r[(11 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))]; -} realvaluetype; -#define REAL_VALUE_TYPE realvaluetype - -#else /* no XFmode support */ - -#if (LONG_DOUBLE_TYPE_SIZE == 128) - -#define REAL_IS_NOT_DOUBLE -#define REAL_ARITHMETIC -typedef struct { - HOST_WIDE_INT r[(19 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))]; -} realvaluetype; -#define REAL_VALUE_TYPE realvaluetype - -#else /* not TFmode */ - -#if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT -/* If no XFmode support, then a REAL_VALUE_TYPE is 64 bits wide - but it is not necessarily a host machine double. */ -#define REAL_IS_NOT_DOUBLE -typedef struct { - HOST_WIDE_INT r[(7 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))]; -} realvaluetype; -#define REAL_VALUE_TYPE realvaluetype +/* REAL_VALUE_TYPE is an array of the minimum number of HOST_WIDE_INTs + required to hold either a 96- or 160-bit extended precision floating + point type. This is true even if the maximum precision floating + point type on the target is smaller. */ +#if MAX_LONG_DOUBLE_TYPE_SIZE == 128 && !INTEL_EXTENDED_IEEE_FORMAT +#define REAL_VALUE_TYPE_SIZE 160 #else -/* If host and target formats are compatible, then a REAL_VALUE_TYPE - is actually a host machine double. */ -#define REAL_VALUE_TYPE double +#define REAL_VALUE_TYPE_SIZE 96 #endif +#define REAL_WIDTH \ + (REAL_VALUE_TYPE_SIZE/HOST_BITS_PER_WIDE_INT \ + + (REAL_VALUE_TYPE_SIZE%HOST_BITS_PER_WIDE_INT ? 1 : 0)) /* round up */ +struct realvaluetype GTY(()) { + HOST_WIDE_INT r[REAL_WIDTH]; +}; +/* Various headers condition prototypes on #ifdef REAL_VALUE_TYPE, so it needs + to be a macro. realvaluetype cannot be a typedef as this interferes with + other headers declaring opaque pointers to it. */ +#define REAL_VALUE_TYPE struct realvaluetype + +/* Calculate the format for CONST_DOUBLE. We need as many slots as + are necessary to overlay a REAL_VALUE_TYPE on them. This could be + as many as five (32-bit HOST_WIDE_INT, 160-bit REAL_VALUE_TYPE). -#endif /* no TFmode support */ -#endif /* no XFmode support */ + A number of places assume that there are always at least two 'w' + slots in a CONST_DOUBLE, so we provide them even if one would suffice. */ -extern int significand_size PARAMS ((enum machine_mode)); +#if REAL_WIDTH == 1 +# define CONST_DOUBLE_FORMAT "ww" +#else +# if REAL_WIDTH == 2 +# define CONST_DOUBLE_FORMAT "ww" +# else +# if REAL_WIDTH == 3 +# define CONST_DOUBLE_FORMAT "www" +# else +# if REAL_WIDTH == 4 +# define CONST_DOUBLE_FORMAT "wwww" +# else +# if REAL_WIDTH == 5 +# define CONST_DOUBLE_FORMAT "wwwww" +# else + #error "REAL_WIDTH > 5 not supported" +# endif +# endif +# endif +# endif +#endif + +extern unsigned int significand_size PARAMS ((enum machine_mode)); -/* If emulation has been enabled by defining REAL_ARITHMETIC or by - setting LONG_DOUBLE_TYPE_SIZE to 96 or 128, then define macros so that - they invoke emulator functions. This will succeed only if the machine - files have been updated to use these macros in place of any - references to host machine `double' or `float' types. */ -#ifdef REAL_ARITHMETIC -#undef REAL_ARITHMETIC #define REAL_ARITHMETIC(value, code, d1, d2) \ earith (&(value), (code), &(d1), &(d2)) -/* Declare functions in real.c. */ +/* Declare functions in real.c. */ extern void earith PARAMS ((REAL_VALUE_TYPE *, int, REAL_VALUE_TYPE *, REAL_VALUE_TYPE *)); extern REAL_VALUE_TYPE etrunci PARAMS ((REAL_VALUE_TYPE)); extern REAL_VALUE_TYPE etruncui PARAMS ((REAL_VALUE_TYPE)); -extern REAL_VALUE_TYPE ereal_atof PARAMS ((const char *, enum machine_mode)); extern REAL_VALUE_TYPE ereal_negate PARAMS ((REAL_VALUE_TYPE)); extern HOST_WIDE_INT efixi PARAMS ((REAL_VALUE_TYPE)); extern unsigned HOST_WIDE_INT efixui PARAMS ((REAL_VALUE_TYPE)); @@ -165,18 +167,32 @@ extern REAL_VALUE_TYPE ereal_from_double PARAMS ((HOST_WIDE_INT *)); #define REAL_VALUES_LESS(x, y) (ereal_cmp ((x), (y)) == -1) #define REAL_VALUE_LDEXP(x, n) ereal_ldexp (x, n) +/* Compare two floating-point objects for bitwise identity. + This is not the same as comparing for equality on IEEE hosts: + -0.0 equals 0.0 but they are not identical, and conversely + two NaNs might be identical but they cannot be equal. */ +#define REAL_VALUES_IDENTICAL(x, y) \ + (!memcmp ((char *) &(x), (char *) &(y), sizeof (REAL_VALUE_TYPE))) + /* These return REAL_VALUE_TYPE: */ #define REAL_VALUE_RNDZINT(x) (etrunci (x)) #define REAL_VALUE_UNSIGNED_RNDZINT(x) (etruncui (x)) -extern REAL_VALUE_TYPE real_value_truncate PARAMS ((enum machine_mode, - REAL_VALUE_TYPE)); + +/* Truncate the floating-point value X to mode MODE. */ #define REAL_VALUE_TRUNCATE(mode, x) real_value_truncate (mode, x) +extern REAL_VALUE_TYPE real_value_truncate PARAMS ((enum machine_mode, + REAL_VALUE_TYPE)); + +/* Expansion of REAL_VALUE_TRUNCATE. + The result is in floating point, rounded to nearest or even. */ +extern bool exact_real_truncate PARAMS ((enum machine_mode, + REAL_VALUE_TYPE *)); /* These return HOST_WIDE_INT: */ /* Convert a floating-point value to integer, rounding toward zero. */ #define REAL_VALUE_FIX(x) (efixi (x)) /* Convert a floating-point value to unsigned integer, rounding - toward zero. */ + toward zero. */ #define REAL_VALUE_UNSIGNED_FIX(x) (efixui (x)) /* Convert ASCII string S to floating point in mode M. @@ -186,6 +202,20 @@ extern REAL_VALUE_TYPE real_value_truncate PARAMS ((enum machine_mode, #define REAL_VALUE_NEGATE ereal_negate +/* Compute the absolute value of a floating-point value X. */ +#define REAL_VALUE_ABS(x) \ + (REAL_VALUE_NEGATIVE (x) ? REAL_VALUE_NEGATE (x) : (x)) + +/* Determine whether a floating-point value X is infinite. */ +#define REAL_VALUE_ISINF(x) (target_isinf (x)) + +/* Determine whether a floating-point value X is a NaN. */ +#define REAL_VALUE_ISNAN(x) (target_isnan (x)) + +/* Determine whether a floating-point value X is negative. */ +#define REAL_VALUE_NEGATIVE(x) (target_negative (x)) + +/* Determine whether a floating-point value X is minus zero. */ #define REAL_VALUE_MINUS_ZERO(x) \ ((ereal_cmp (x, dconst0) == 0) && (ereal_isneg (x) != 0 )) @@ -198,234 +228,34 @@ extern REAL_VALUE_TYPE real_value_truncate PARAMS ((enum machine_mode, #define REAL_VALUE_FROM_UNSIGNED_INT(d, lo, hi, mode) \ ereal_from_uint (&d, lo, hi, mode) -/* IN is a REAL_VALUE_TYPE. OUT is an array of longs. */ -#if LONG_DOUBLE_TYPE_SIZE == 96 -#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etarldouble ((IN), (OUT))) -#else -#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etartdouble ((IN), (OUT))) -#endif +/* IN is a REAL_VALUE_TYPE. OUT is an array of longs. */ +#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) \ + (LONG_DOUBLE_TYPE_SIZE == 64 ? etardouble ((IN), (OUT)) \ + : LONG_DOUBLE_TYPE_SIZE == 96 ? etarldouble ((IN), (OUT)) \ + : LONG_DOUBLE_TYPE_SIZE == 128 ? etartdouble ((IN), (OUT)) \ + : abort ()) #define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) (etardouble ((IN), (OUT))) -/* IN is a REAL_VALUE_TYPE. OUT is a long. */ +/* IN is a REAL_VALUE_TYPE. OUT is a long. */ #define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) ((OUT) = etarsingle ((IN))) -/* Inverse of REAL_VALUE_TO_TARGET_DOUBLE. */ +/* Inverse of REAL_VALUE_TO_TARGET_DOUBLE. */ #define REAL_VALUE_UNTO_TARGET_DOUBLE(d) (ereal_unto_double (d)) -/* Inverse of REAL_VALUE_TO_TARGET_SINGLE. */ +/* Inverse of REAL_VALUE_TO_TARGET_SINGLE. */ #define REAL_VALUE_UNTO_TARGET_SINGLE(f) (ereal_unto_float (f)) /* d is an array of HOST_WIDE_INT that holds a double precision - value in the target computer's floating point format. */ + value in the target computer's floating point format. */ #define REAL_VALUE_FROM_TARGET_DOUBLE(d) (ereal_from_double (d)) -/* f is a HOST_WIDE_INT containing a single precision target float value. */ +/* f is a HOST_WIDE_INT containing a single precision target float value. */ #define REAL_VALUE_FROM_TARGET_SINGLE(f) (ereal_from_float (f)) /* Conversions to decimal ASCII string. */ #define REAL_VALUE_TO_DECIMAL(r, fmt, s) (ereal_to_decimal (r, s)) -#endif /* REAL_ARITHMETIC defined */ - /* **** End of software floating point emulator interface macros **** */ -#else /* No XFmode or TFmode and REAL_ARITHMETIC not defined */ - -/* old interface */ -#ifdef REAL_ARITHMETIC -/* Defining REAL_IS_NOT_DOUBLE breaks certain initializations - when REAL_ARITHMETIC etc. are not defined. */ - -/* Now see if the host and target machines use the same format. - If not, define REAL_IS_NOT_DOUBLE (even if we end up representing - reals as doubles because we have no better way in this cross compiler.) - This turns off various optimizations that can happen when we know the - compiler's float format matches the target's float format. - */ -#if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT -#define REAL_IS_NOT_DOUBLE -#ifndef REAL_VALUE_TYPE -typedef struct { - HOST_WIDE_INT r[sizeof (double)/sizeof (HOST_WIDE_INT)]; - } realvaluetype; -#define REAL_VALUE_TYPE realvaluetype -#endif /* no REAL_VALUE_TYPE */ -#endif /* formats differ */ -#endif /* 0 */ - -#endif /* emulator not used */ - -/* If we are not cross-compiling, use a `double' to represent the - floating-point value. Otherwise, use some other type - (probably a struct containing an array of longs). */ -#ifndef REAL_VALUE_TYPE -#define REAL_VALUE_TYPE double -#else -#define REAL_IS_NOT_DOUBLE -#endif - -#if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT - -/* Convert a type `double' value in host format first to a type `float' - value in host format and then to a single type `long' value which - is the bitwise equivalent of the `float' value. */ -#ifndef REAL_VALUE_TO_TARGET_SINGLE -#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) \ -do { \ - union { \ - float f; \ - HOST_WIDE_INT l; \ - } u; \ - if (sizeof(HOST_WIDE_INT) < sizeof(float)) \ - abort(); \ - u.l = 0; \ - u.f = (IN); \ - (OUT) = u.l; \ -} while (0) -#endif - -/* Convert a type `double' value in host format to a pair of type `long' - values which is its bitwise equivalent, but put the two words into - proper word order for the target. */ -#ifndef REAL_VALUE_TO_TARGET_DOUBLE -#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \ -do { \ - union { \ - REAL_VALUE_TYPE f; \ - HOST_WIDE_INT l[2]; \ - } u; \ - if (sizeof(HOST_WIDE_INT) * 2 < sizeof(REAL_VALUE_TYPE)) \ - abort(); \ - u.l[0] = u.l[1] = 0; \ - u.f = (IN); \ - if (HOST_FLOAT_WORDS_BIG_ENDIAN == FLOAT_WORDS_BIG_ENDIAN) \ - (OUT)[0] = u.l[0], (OUT)[1] = u.l[1]; \ - else \ - (OUT)[1] = u.l[0], (OUT)[0] = u.l[1]; \ -} while (0) -#endif -#endif /* HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT */ - -/* In this configuration, double and long double are the same. */ -#ifndef REAL_VALUE_TO_TARGET_LONG_DOUBLE -#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(a, b) REAL_VALUE_TO_TARGET_DOUBLE (a, b) -#endif - -/* Compare two floating-point objects for bitwise identity. - This is not the same as comparing for equality on IEEE hosts: - -0.0 equals 0.0 but they are not identical, and conversely - two NaNs might be identical but they cannot be equal. */ -#define REAL_VALUES_IDENTICAL(x, y) \ - (!bcmp ((char *) &(x), (char *) &(y), sizeof (REAL_VALUE_TYPE))) - -/* Compare two floating-point values for equality. */ -#ifndef REAL_VALUES_EQUAL -#define REAL_VALUES_EQUAL(x, y) ((x) == (y)) -#endif - -/* Compare two floating-point values for less than. */ -#ifndef REAL_VALUES_LESS -#define REAL_VALUES_LESS(x, y) ((x) < (y)) -#endif - -/* Truncate toward zero to an integer floating-point value. */ -#ifndef REAL_VALUE_RNDZINT -#define REAL_VALUE_RNDZINT(x) ((double) ((int) (x))) -#endif - -/* Truncate toward zero to an unsigned integer floating-point value. */ -#ifndef REAL_VALUE_UNSIGNED_RNDZINT -#define REAL_VALUE_UNSIGNED_RNDZINT(x) ((double) ((unsigned int) (x))) -#endif - -/* Convert a floating-point value to integer, rounding toward zero. */ -#ifndef REAL_VALUE_FIX -#define REAL_VALUE_FIX(x) ((int) (x)) -#endif - -/* Convert a floating-point value to unsigned integer, rounding - toward zero. */ -#ifndef REAL_VALUE_UNSIGNED_FIX -#define REAL_VALUE_UNSIGNED_FIX(x) ((unsigned int) (x)) -#endif - -/* Scale X by Y powers of 2. */ -#ifndef REAL_VALUE_LDEXP -#define REAL_VALUE_LDEXP(x, y) ldexp (x, y) -extern double ldexp (); -#endif - -/* Convert the string X to a floating-point value. */ -#ifndef REAL_VALUE_ATOF -#if 1 -/* Use real.c to convert decimal numbers to binary, ... */ -extern REAL_VALUE_TYPE ereal_atof PARAMS ((const char *, enum machine_mode)); -#define REAL_VALUE_ATOF(x, s) ereal_atof (x, s) -/* Could use ereal_atof here for hexadecimal floats too, but real_hex_to_f - is OK and it uses faster native fp arithmetic. */ -/* #define REAL_VALUE_HTOF(x, s) ereal_atof (x, s) */ -#else -/* ... or, if you like the host computer's atof, go ahead and use it: */ -#define REAL_VALUE_ATOF(x, s) atof (x) -#if defined (MIPSEL) || defined (MIPSEB) -/* MIPS compiler can't handle parens around the function name. - This problem *does not* appear to be connected with any - macro definition for atof. It does not seem there is one. */ -extern double atof (); -#else -extern double (atof) (); -#endif -#endif -#endif - -/* Hexadecimal floating constant input for use with host computer's - fp arithmetic. */ -#ifndef REAL_VALUE_HTOF -extern REAL_VALUE_TYPE real_hex_to_f PARAMS ((char *, enum machine_mode)); -#define REAL_VALUE_HTOF(s,m) real_hex_to_f(s,m) -#endif - -/* Negate the floating-point value X. */ -#ifndef REAL_VALUE_NEGATE -#define REAL_VALUE_NEGATE(x) (- (x)) -#endif - -/* Truncate the floating-point value X to mode MODE. This is correct only - for the most common case where the host and target have objects of the same - size and where `float' is SFmode. */ - -/* Don't use REAL_VALUE_TRUNCATE directly--always call real_value_truncate. */ -extern REAL_VALUE_TYPE real_value_truncate PARAMS ((enum machine_mode, - REAL_VALUE_TYPE)); - -#ifndef REAL_VALUE_TRUNCATE -#define REAL_VALUE_TRUNCATE(mode, x) \ - (GET_MODE_BITSIZE (mode) == sizeof (float) * HOST_BITS_PER_CHAR \ - ? (float) (x) : (x)) -#endif - -/* Determine whether a floating-point value X is infinite. */ -#ifndef REAL_VALUE_ISINF -#define REAL_VALUE_ISINF(x) (target_isinf (x)) -#endif - -/* Determine whether a floating-point value X is a NaN. */ -#ifndef REAL_VALUE_ISNAN -#define REAL_VALUE_ISNAN(x) (target_isnan (x)) -#endif - -/* Determine whether a floating-point value X is negative. */ -#ifndef REAL_VALUE_NEGATIVE -#define REAL_VALUE_NEGATIVE(x) (target_negative (x)) -#endif - -extern int target_isnan PARAMS ((REAL_VALUE_TYPE)); -extern int target_isinf PARAMS ((REAL_VALUE_TYPE)); -extern int target_negative PARAMS ((REAL_VALUE_TYPE)); - -/* Determine whether a floating-point value X is minus 0. */ -#ifndef REAL_VALUE_MINUS_ZERO -#define REAL_VALUE_MINUS_ZERO(x) ((x) == 0 && REAL_VALUE_NEGATIVE (x)) -#endif /* Constant real values 0, 1, 2, and -1. */ @@ -434,32 +264,6 @@ extern REAL_VALUE_TYPE dconst1; extern REAL_VALUE_TYPE dconst2; extern REAL_VALUE_TYPE dconstm1; -/* Union type used for extracting real values from CONST_DOUBLEs - or putting them in. */ - -union real_extract -{ - REAL_VALUE_TYPE d; - HOST_WIDE_INT i[sizeof (REAL_VALUE_TYPE) / sizeof (HOST_WIDE_INT)]; -}; - -/* For a CONST_DOUBLE: - The usual two ints that hold the value. - For a DImode, that is all there are; - and CONST_DOUBLE_LOW is the low-order word and ..._HIGH the high-order. - For a float, the number of ints varies, - and CONST_DOUBLE_LOW is the one that should come first *in memory*. - So use &CONST_DOUBLE_LOW(r) as the address of an array of ints. */ -#define CONST_DOUBLE_LOW(r) XWINT (r, 2) -#define CONST_DOUBLE_HIGH(r) XWINT (r, 3) - -/* Link for chain of all CONST_DOUBLEs in use in current function. */ -#define CONST_DOUBLE_CHAIN(r) X0EXP (r, 1) -/* The MEM which represents this CONST_DOUBLE's value in memory, - or const0_rtx if no MEM has been made for it yet, - or cc0_rtx if it is not on the chain. */ -#define CONST_DOUBLE_MEM(r) XEXP (r, 0) - /* Given a CONST_DOUBLE in FROM, store into TO the value it represents. */ /* Function to return a real value (not a tree node) from a given integer constant. */ @@ -468,23 +272,18 @@ REAL_VALUE_TYPE real_value_from_int_cst PARAMS ((union tree_node *, union tree_node *)); #define REAL_VALUE_FROM_CONST_DOUBLE(to, from) \ -do { union real_extract u; \ - bcopy ((char *) &CONST_DOUBLE_LOW ((from)), (char *) &u, sizeof u); \ - to = u.d; } while (0) + memcpy (&(to), &CONST_DOUBLE_LOW ((from)), sizeof (REAL_VALUE_TYPE)) /* Return a CONST_DOUBLE with value R and mode M. */ -#define CONST_DOUBLE_FROM_REAL_VALUE(r, m) immed_real_const_1 (r, m) -extern struct rtx_def *immed_real_const_1 PARAMS ((REAL_VALUE_TYPE, - enum machine_mode)); - +#define CONST_DOUBLE_FROM_REAL_VALUE(r, m) \ + const_double_from_real_value (r, m) +extern rtx const_double_from_real_value PARAMS ((REAL_VALUE_TYPE, + enum machine_mode)); -/* Convert a floating point value `r', that can be interpreted - as a host machine float or double, to a decimal ASCII string `s' - using printf format string `fmt'. */ -#ifndef REAL_VALUE_TO_DECIMAL -#define REAL_VALUE_TO_DECIMAL(r, fmt, s) (sprintf (s, fmt, r)) -#endif +/* Shorthand; can be handy in machine descriptions. */ +#define CONST_DOUBLE_ATOF(s, m) \ + CONST_DOUBLE_FROM_REAL_VALUE (REAL_VALUE_ATOF (s, m), m) /* Replace R by 1/R in the given machine mode, if the result is exact. */ extern int exact_real_inverse PARAMS ((enum machine_mode, REAL_VALUE_TYPE *)); @@ -492,13 +291,10 @@ extern int target_isnan PARAMS ((REAL_VALUE_TYPE)); extern int target_isinf PARAMS ((REAL_VALUE_TYPE)); extern int target_negative PARAMS ((REAL_VALUE_TYPE)); extern void debug_real PARAMS ((REAL_VALUE_TYPE)); +extern REAL_VALUE_TYPE ereal_atof PARAMS ((const char *, enum machine_mode)); + +/* In tree.c: wrap up a REAL_VALUE_TYPE in a tree node. */ +extern tree build_real PARAMS ((tree, REAL_VALUE_TYPE)); -/* In varasm.c */ -extern void assemble_real PARAMS ((REAL_VALUE_TYPE, - enum machine_mode)); -extern void debug_real PARAMS ((REAL_VALUE_TYPE)); -/* In varasm.c */ -extern void assemble_real PARAMS ((REAL_VALUE_TYPE, - enum machine_mode)); -#endif /* Not REAL_H_INCLUDED */ +#endif /* ! GCC_REAL_H */