diff options
Diffstat (limited to 'gcc/real.h')
| -rw-r--r-- | gcc/real.h | 69 |
1 files changed, 43 insertions, 26 deletions
@@ -193,6 +193,28 @@ extern const struct real_format * (FLOAT_MODE_P (MODE) \ && FLOAT_MODE_FORMAT (MODE)->has_sign_dependent_rounding) +/* This class allows functions in this file to accept a floating-point + format as either a mode or an explicit real_format pointer. In the + former case the mode must be VOIDmode (which means "no particular + format") or must satisfy SCALAR_FLOAT_MODE_P. */ +class format_helper +{ +public: + format_helper (const real_format *format) : m_format (format) {} + format_helper (machine_mode m); + const real_format *operator-> () const { return m_format; } + operator const real_format *() const { return m_format; } + + bool decimal_p () const { return m_format && m_format->b == 10; } + +private: + const real_format *m_format; +}; + +inline format_helper::format_helper (machine_mode m) + : m_format (m == VOIDmode ? 0 : REAL_MODE_FORMAT (m)) +{} + /* Declare functions in real.c. */ /* True if the given mode has a NaN representation and the treatment of @@ -254,12 +276,12 @@ extern bool real_identical (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *); extern bool real_equal (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *); extern bool real_less (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *); -/* Extend or truncate to a new mode. */ -extern void real_convert (REAL_VALUE_TYPE *, machine_mode, +/* Extend or truncate to a new format. */ +extern void real_convert (REAL_VALUE_TYPE *, format_helper, const REAL_VALUE_TYPE *); /* Return true if truncating to NEW is exact. */ -extern bool exact_real_truncate (machine_mode, const REAL_VALUE_TYPE *); +extern bool exact_real_truncate (format_helper, const REAL_VALUE_TYPE *); /* Render R as a decimal floating point constant. */ extern void real_to_decimal (char *, const REAL_VALUE_TYPE *, size_t, @@ -281,24 +303,20 @@ extern HOST_WIDE_INT real_to_integer (const REAL_VALUE_TYPE *); the value underflows, +1 if overflows, and 0 otherwise. */ extern int real_from_string (REAL_VALUE_TYPE *, const char *); /* Wrapper to allow different internal representation for decimal floats. */ -extern void real_from_string3 (REAL_VALUE_TYPE *, const char *, machine_mode); +extern void real_from_string3 (REAL_VALUE_TYPE *, const char *, format_helper); -extern long real_to_target_fmt (long *, const REAL_VALUE_TYPE *, - const struct real_format *); -extern long real_to_target (long *, const REAL_VALUE_TYPE *, machine_mode); +extern long real_to_target (long *, const REAL_VALUE_TYPE *, format_helper); -extern void real_from_target_fmt (REAL_VALUE_TYPE *, const long *, - const struct real_format *); extern void real_from_target (REAL_VALUE_TYPE *, const long *, - machine_mode); + format_helper); extern void real_inf (REAL_VALUE_TYPE *); -extern bool real_nan (REAL_VALUE_TYPE *, const char *, int, machine_mode); +extern bool real_nan (REAL_VALUE_TYPE *, const char *, int, format_helper); extern void real_maxval (REAL_VALUE_TYPE *, int, machine_mode); -extern void real_2expN (REAL_VALUE_TYPE *, int, machine_mode); +extern void real_2expN (REAL_VALUE_TYPE *, int, format_helper); extern unsigned int real_hash (const REAL_VALUE_TYPE *); @@ -370,15 +388,14 @@ extern const struct real_format arm_half_format; #define REAL_VALUE_TO_TARGET_DECIMAL32(IN, OUT) \ ((OUT) = real_to_target (NULL, &(IN), mode_for_size (32, MODE_DECIMAL_FLOAT, 0))) -extern REAL_VALUE_TYPE real_value_truncate (machine_mode, - REAL_VALUE_TYPE); +extern REAL_VALUE_TYPE real_value_truncate (format_helper, REAL_VALUE_TYPE); extern REAL_VALUE_TYPE real_value_negate (const REAL_VALUE_TYPE *); extern REAL_VALUE_TYPE real_value_abs (const REAL_VALUE_TYPE *); -extern int significand_size (machine_mode); +extern int significand_size (format_helper); -extern REAL_VALUE_TYPE real_from_string2 (const char *, machine_mode); +extern REAL_VALUE_TYPE real_from_string2 (const char *, format_helper); #define REAL_VALUE_ATOF(s, m) \ real_from_string2 (s, m) @@ -437,8 +454,8 @@ REAL_VALUE_TYPE real_value_from_int_cst (const_tree, const_tree); /* Return a CONST_DOUBLE with value R and mode M. */ extern rtx const_double_from_real_value (REAL_VALUE_TYPE, machine_mode); -/* Replace R by 1/R in the given machine mode, if the result is exact. */ -extern bool exact_real_inverse (machine_mode, REAL_VALUE_TYPE *); +/* Replace R by 1/R in the given format, if the result is exact. */ +extern bool exact_real_inverse (format_helper, REAL_VALUE_TYPE *); /* Return true if arithmetic on values in IMODE that were promoted from values in TMODE is equivalent to direct arithmetic on values @@ -451,25 +468,25 @@ extern tree build_real (tree, REAL_VALUE_TYPE); /* Likewise, but first truncate the value to the type. */ extern tree build_real_truncate (tree, REAL_VALUE_TYPE); -/* Calculate R as X raised to the integer exponent N in mode MODE. */ -extern bool real_powi (REAL_VALUE_TYPE *, machine_mode, +/* Calculate R as X raised to the integer exponent N in format FMT. */ +extern bool real_powi (REAL_VALUE_TYPE *, format_helper, const REAL_VALUE_TYPE *, HOST_WIDE_INT); /* Standard round to integer value functions. */ -extern void real_trunc (REAL_VALUE_TYPE *, machine_mode, +extern void real_trunc (REAL_VALUE_TYPE *, format_helper, const REAL_VALUE_TYPE *); -extern void real_floor (REAL_VALUE_TYPE *, machine_mode, +extern void real_floor (REAL_VALUE_TYPE *, format_helper, const REAL_VALUE_TYPE *); -extern void real_ceil (REAL_VALUE_TYPE *, machine_mode, +extern void real_ceil (REAL_VALUE_TYPE *, format_helper, const REAL_VALUE_TYPE *); -extern void real_round (REAL_VALUE_TYPE *, machine_mode, +extern void real_round (REAL_VALUE_TYPE *, format_helper, const REAL_VALUE_TYPE *); /* Set the sign of R to the sign of X. */ extern void real_copysign (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *); /* Check whether the real constant value given is an integer. */ -extern bool real_isinteger (const REAL_VALUE_TYPE *, machine_mode); +extern bool real_isinteger (const REAL_VALUE_TYPE *, format_helper); extern bool real_isinteger (const REAL_VALUE_TYPE *, HOST_WIDE_INT *); /* Write into BUF the maximum representable finite floating-point @@ -480,7 +497,7 @@ extern void get_max_float (const struct real_format *, char *, size_t); #ifndef GENERATOR_FILE /* real related routines. */ extern wide_int real_to_integer (const REAL_VALUE_TYPE *, bool *, int); -extern void real_from_integer (REAL_VALUE_TYPE *, machine_mode, +extern void real_from_integer (REAL_VALUE_TYPE *, format_helper, const wide_int_ref &, signop); #endif |