#ifndef GCC_REAL_H
#define GCC_REAL_H
#include "machmode.h"
enum real_value_class {
rvc_zero,
rvc_normal,
rvc_inf,
rvc_nan
};
#define SIGNIFICAND_BITS (128 + HOST_BITS_PER_LONG)
#define EXP_BITS (32 - 3)
#define MAX_EXP ((1 << (EXP_BITS - 1)) - 1)
#define SIGSZ (SIGNIFICAND_BITS / HOST_BITS_PER_LONG)
#define SIG_MSB ((unsigned long)1 << (HOST_BITS_PER_LONG - 1))
struct real_value GTY(())
{
ENUM_BITFIELD (real_value_class) class : 2;
unsigned int sign : 1;
signed int exp : EXP_BITS;
unsigned long sig[SIGSZ];
};
#define REAL_VALUE_TYPE struct real_value
#define REAL_VALUE_TYPE_SIZE (SIGNIFICAND_BITS + 32)
#define REAL_WIDTH \
(REAL_VALUE_TYPE_SIZE/HOST_BITS_PER_WIDE_INT \
+ (REAL_VALUE_TYPE_SIZE%HOST_BITS_PER_WIDE_INT ? 1 : 0))
extern char test_real_width
[sizeof(REAL_VALUE_TYPE) <= REAL_WIDTH*sizeof(HOST_WIDE_INT) ? 1 : -1];
#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
# if REAL_WIDTH == 6
# define CONST_DOUBLE_FORMAT "wwwwww"
# else
#error "REAL_WIDTH > 6 not supported"
# endif
# endif
# endif
# endif
# endif
#endif
struct real_format
{
void (*encode) PARAMS ((const struct real_format *, long *,
const REAL_VALUE_TYPE *));
void (*decode) PARAMS ((const struct real_format *, REAL_VALUE_TYPE *,
const long *));
int b;
int log2_b;
int p;
int emin;
int emax;
bool has_nans;
bool has_inf;
bool has_denorm;
bool has_signed_zero;
bool qnan_msb_set;
};
extern const struct real_format *real_format_for_mode[TFmode - QFmode + 1];
extern void real_arithmetic PARAMS ((REAL_VALUE_TYPE *, int,
const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *));
extern bool real_compare PARAMS ((int, const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *));
extern bool real_isinf PARAMS ((const REAL_VALUE_TYPE *));
extern bool real_isnan PARAMS ((const REAL_VALUE_TYPE *));
extern bool real_isneg PARAMS ((const REAL_VALUE_TYPE *));
extern bool real_isnegzero PARAMS ((const REAL_VALUE_TYPE *));
extern bool real_identical PARAMS ((const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *));
extern void real_convert PARAMS ((REAL_VALUE_TYPE *,
enum machine_mode,
const REAL_VALUE_TYPE *));
extern bool exact_real_truncate PARAMS ((enum machine_mode,
const REAL_VALUE_TYPE *));
extern void real_to_decimal PARAMS ((char *, const REAL_VALUE_TYPE *,
size_t, size_t, int));
extern void real_to_hexadecimal PARAMS ((char *, const REAL_VALUE_TYPE *,
size_t, size_t, int));
extern HOST_WIDE_INT real_to_integer PARAMS ((const REAL_VALUE_TYPE *));
extern void real_to_integer2 PARAMS ((HOST_WIDE_INT *, HOST_WIDE_INT *,
const REAL_VALUE_TYPE *));
extern void real_from_string PARAMS ((REAL_VALUE_TYPE *, const char *));
extern void real_from_integer PARAMS ((REAL_VALUE_TYPE *,
enum machine_mode,
unsigned HOST_WIDE_INT,
HOST_WIDE_INT, int));
extern long real_to_target_fmt PARAMS ((long *, const REAL_VALUE_TYPE *,
const struct real_format *));
extern long real_to_target PARAMS ((long *, const REAL_VALUE_TYPE *,
enum machine_mode));
extern void real_from_target_fmt PARAMS ((REAL_VALUE_TYPE *, const long *,
const struct real_format *));
extern void real_from_target PARAMS ((REAL_VALUE_TYPE *, const long *,
enum machine_mode));
extern void real_inf PARAMS ((REAL_VALUE_TYPE *));
extern bool real_nan PARAMS ((REAL_VALUE_TYPE *, const char *,
int, enum machine_mode));
extern void real_2expN PARAMS ((REAL_VALUE_TYPE *, int));
extern unsigned int real_hash PARAMS ((const REAL_VALUE_TYPE *));
extern const struct real_format ieee_single_format;
extern const struct real_format ieee_double_format;
extern const struct real_format ieee_extended_motorola_format;
extern const struct real_format ieee_extended_intel_96_format;
extern const struct real_format ieee_extended_intel_128_format;
extern const struct real_format ibm_extended_format;
extern const struct real_format ieee_quad_format;
extern const struct real_format vax_f_format;
extern const struct real_format vax_d_format;
extern const struct real_format vax_g_format;
extern const struct real_format i370_single_format;
extern const struct real_format i370_double_format;
extern const struct real_format c4x_single_format;
extern const struct real_format c4x_extended_format;
extern const struct real_format real_internal_format;
#define REAL_ARITHMETIC(value, code, d1, d2) \
real_arithmetic (&(value), code, &(d1), &(d2))
#define REAL_VALUES_IDENTICAL(x, y) real_identical (&(x), &(y))
#define REAL_VALUES_EQUAL(x, y) real_compare (EQ_EXPR, &(x), &(y))
#define REAL_VALUES_LESS(x, y) real_compare (LT_EXPR, &(x), &(y))
#define REAL_VALUE_ISINF(x) real_isinf (&(x))
#define REAL_VALUE_ISNAN(x) real_isnan (&(x))
#define REAL_VALUE_NEGATIVE(x) real_isneg (&(x))
#define REAL_VALUE_MINUS_ZERO(x) real_isnegzero (&(x))
#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) \
real_to_target (OUT, &(IN), \
mode_for_size (LONG_DOUBLE_TYPE_SIZE, MODE_FLOAT, 0))
#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \
real_to_target (OUT, &(IN), mode_for_size (64, MODE_FLOAT, 0))
#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) \
((OUT) = real_to_target (NULL, &(IN), mode_for_size (32, MODE_FLOAT, 0)))
#define REAL_VALUE_FROM_INT(r, lo, hi, mode) \
real_from_integer (&(r), mode, lo, hi, 0)
#define REAL_VALUE_FROM_UNSIGNED_INT(r, lo, hi, mode) \
real_from_integer (&(r), mode, lo, hi, 1)
extern REAL_VALUE_TYPE real_value_truncate PARAMS ((enum machine_mode,
REAL_VALUE_TYPE));
#define REAL_VALUE_TO_INT(plow, phigh, r) \
real_to_integer2 (plow, phigh, &(r))
extern REAL_VALUE_TYPE real_arithmetic2 PARAMS ((int, const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *));
#define REAL_VALUE_NEGATE(X) \
real_arithmetic2 (NEGATE_EXPR, &(X), NULL)
#define REAL_VALUE_ABS(X) \
real_arithmetic2 (ABS_EXPR, &(X), NULL)
extern int significand_size PARAMS ((enum machine_mode));
extern REAL_VALUE_TYPE real_from_string2 PARAMS ((const char *,
enum machine_mode));
#define REAL_VALUE_ATOF(s, m) \
real_from_string2 (s, m)
#define CONST_DOUBLE_ATOF(s, m) \
CONST_DOUBLE_FROM_REAL_VALUE (real_from_string2 (s, m), m)
#define REAL_VALUE_FIX(r) \
real_to_integer (&(r))
#define REAL_VALUE_UNSIGNED_FIX(r) \
real_to_integer (&(r))
extern int real_exponent PARAMS ((const REAL_VALUE_TYPE *));
extern void real_ldexp PARAMS ((REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *, int));
extern REAL_VALUE_TYPE dconst0;
extern REAL_VALUE_TYPE dconst1;
extern REAL_VALUE_TYPE dconst2;
extern REAL_VALUE_TYPE dconstm1;
REAL_VALUE_TYPE real_value_from_int_cst PARAMS ((union tree_node *,
union tree_node *));
#define REAL_VALUE_FROM_CONST_DOUBLE(to, from) \
memcpy (&(to), &CONST_DOUBLE_LOW ((from)), sizeof (REAL_VALUE_TYPE))
#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));
extern bool exact_real_inverse PARAMS ((enum machine_mode, REAL_VALUE_TYPE *));
extern tree build_real PARAMS ((tree, REAL_VALUE_TYPE));
#endif