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Functions
void	encode_decimal32 (const struct real_format fmt, long , const REAL_VALUE_TYPE *)

void	encode_decimal64 (const struct real_format fmt, long , const REAL_VALUE_TYPE *)

void	decode_decimal128 (const struct real_format , REAL_VALUE_TYPE , const long *)

void	decode_decimal32 (const struct real_format , REAL_VALUE_TYPE , const long *)

void	decode_decimal64 (const struct real_format , REAL_VALUE_TYPE , const long *)

void	encode_decimal128 (const struct real_format fmt, long , const REAL_VALUE_TYPE *)

int	decimal_do_compare (const REAL_VALUE_TYPE , const REAL_VALUE_TYPE , int)

void	decimal_real_from_string (REAL_VALUE_TYPE , const char )

void	decimal_round_for_format (const struct real_format , REAL_VALUE_TYPE )

void	decimal_real_convert (REAL_VALUE_TYPE , const real_format , const REAL_VALUE_TYPE *)

void	decimal_real_to_decimal (char , const REAL_VALUE_TYPE , size_t, size_t, int)

void	decimal_do_fix_trunc (REAL_VALUE_TYPE , const REAL_VALUE_TYPE )

void	decimal_real_maxval (REAL_VALUE_TYPE *, int, machine_mode)

wide_int	decimal_real_to_integer (const REAL_VALUE_TYPE , bool , int)

HOST_WIDE_INT	decimal_real_to_integer (const REAL_VALUE_TYPE *)

Function Documentation

◆ decimal_do_compare()

int decimal_do_compare	(	const REAL_VALUE_TYPE *	a,
		const REAL_VALUE_TYPE *	b,
		int	nan_result )

Arithmetic and conversion functions.

Helper function to real.cc:do_compare() to handle decimal internal
representation including when one of the operands is still in the
binary internal representation.

References a, b, decimal_from_binary(), ggc_alloc(), and REAL_VALUE_TYPE.

Referenced by do_compare().

◆ decimal_do_fix_trunc()

void decimal_do_fix_trunc	(	REAL_VALUE_TYPE *	r,
		const REAL_VALUE_TYPE *	a )

Set R to A truncated to an integral value toward zero (decimal
floating point).

References a, decimal_from_decnumber(), ggc_alloc(), and r.

Referenced by decimal_real_arithmetic(), and do_fix_trunc().

◆ decimal_real_convert()

void decimal_real_convert	(	REAL_VALUE_TYPE *	r,
		const real_format *	fmt,
		const REAL_VALUE_TYPE *	a )

Extend or truncate to a new mode.  Handles conversions between
binary and decimal types.

References a, decimal_from_binary(), decimal_to_binary(), ggc_alloc(), and r.

Referenced by real_2expN(), real_convert(), and round_for_format().

◆ decimal_real_from_string()

void decimal_real_from_string	(	REAL_VALUE_TYPE *	r,
		const char *	s )

Create decimal encoded R from string S.

References decimal_from_decnumber(), ggc_alloc(), and r.

Referenced by build_real(), decimal_from_binary(), decimal_from_integer(), decimal_real_maxval(), real_from_string3(), and ubsan_instrument_float_cast().

◆ decimal_real_maxval()

void decimal_real_maxval	(	REAL_VALUE_TYPE *	r,
		int	sign,
		machine_mode	mode )

Fills R with the largest finite value representable in mode MODE.
If SIGN is nonzero, R is set to the most negative finite value.

References decimal_real_from_string(), gcc_unreachable, ggc_alloc(), and r.

Referenced by real_maxval().

◆ decimal_real_to_decimal()

void decimal_real_to_decimal	(	char *	str,
		const REAL_VALUE_TYPE *	r_orig,
		size_t	buf_size,
		size_t	digits,
		int	crop_trailing_zeros )

Render R_ORIG as a decimal floating point constant.  Emit DIGITS
significant digits in the result, bounded by BUF_SIZE.  If DIGITS
is 0, choose the maximum for the representation.  If
CROP_TRAILING_ZEROS, strip trailing zeros.  Currently, not honoring
DIGITS or CROP_TRAILING_ZEROS.

References gcc_assert, and ggc_alloc().

Referenced by real_to_decimal_for_mode().

◆ decimal_real_to_integer() [1/2]

HOST_WIDE_INT decimal_real_to_integer ( const REAL_VALUE_TYPE * r )

Render decimal float value R as an integer.

References ggc_alloc(), r, real_from_string(), real_to_integer(), and REAL_VALUE_TYPE.

Referenced by real_to_integer(), and real_to_integer().

◆ decimal_real_to_integer() [2/2]

wide_int decimal_real_to_integer	(	const REAL_VALUE_TYPE *	r,
		bool *	fail,
		int	precision )

Likewise, but returns a wide_int with PRECISION.  *FAIL is set if the
value does not fit.

References ggc_alloc(), r, real_from_string(), real_to_integer(), and REAL_VALUE_TYPE.

◆ decimal_round_for_format()

void decimal_round_for_format	(	const struct real_format *	fmt,
		REAL_VALUE_TYPE *	r )

Helper to round_for_format, handling decimal float types.

References decimal_double_format, decimal_from_decnumber(), decimal_quad_format, decimal_single_format, gcc_unreachable, ggc_alloc(), r, and rvc_normal.

Referenced by round_for_format().

◆ decode_decimal128()

void decode_decimal128	(	const struct real_format *	fmt,
		REAL_VALUE_TYPE *	r,
		const long *	buf )

Decode an IEEE 754 decimal128 type into a real.

References decimal_from_decnumber(), FLOAT_WORDS_BIG_ENDIAN, ggc_alloc(), r, and WORDS_BIGENDIAN.

Referenced by decode_decimal_quad().

◆ decode_decimal32()

void decode_decimal32	(	const struct real_format *	fmt,
		REAL_VALUE_TYPE *	r,
		const long *	buf )

Decode 32/64/128-bit IEEE 754 encoded values into REAL_VALUE_TYPEs.

Decode an IEEE 754 decimal32 type into a real.

References decimal_from_decnumber(), ggc_alloc(), and r.

Referenced by decode_decimal_single().

◆ decode_decimal64()

void decode_decimal64	(	const struct real_format *	fmt,
		REAL_VALUE_TYPE *	r,
		const long *	buf )

Decode an IEEE 754 decimal64 type into a real.

References decimal_from_decnumber(), FLOAT_WORDS_BIG_ENDIAN, ggc_alloc(), r, and WORDS_BIGENDIAN.

Referenced by decode_decimal_double().

◆ encode_decimal128()

void encode_decimal128	(	const struct real_format *	fmt,
		long *	buf,
		const REAL_VALUE_TYPE *	r )

Encode a real into an IEEE 754 decimal128 type.

References decimal_to_decnumber(), FLOAT_WORDS_BIG_ENDIAN, ggc_alloc(), r, and WORDS_BIGENDIAN.

Referenced by encode_decimal_quad().

◆ encode_decimal32()

void encode_decimal32	(	const struct real_format *	fmt,
		long *	buf,
		const REAL_VALUE_TYPE *	r )

Decimal floating point support functions for GNU compiler.
   Copyright (C) 2005-2024 Free Software Foundation, Inc.

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.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.

Encode REAL_VALUE_TYPEs into 32/64/128-bit IEEE 754 encoded values.

Encode a real into an IEEE 754 decimal32 type.

References decimal_to_decnumber(), ggc_alloc(), and r.

Referenced by encode_decimal_single().

◆ encode_decimal64()

void encode_decimal64	(	const struct real_format *	fmt,
		long *	buf,
		const REAL_VALUE_TYPE *	r )

Encode a real into an IEEE 754 decimal64 type.

References decimal_to_decnumber(), FLOAT_WORDS_BIG_ENDIAN, ggc_alloc(), r, and WORDS_BIGENDIAN.

Referenced by encode_decimal_double().

Functions

Function Documentation

◆ decimal_do_compare()

◆ decimal_do_fix_trunc()

◆ decimal_real_convert()

◆ decimal_real_from_string()

◆ decimal_real_maxval()

◆ decimal_real_to_decimal()

◆ decimal_real_to_integer() [1/2]

◆ decimal_real_to_integer() [2/2]

◆ decimal_round_for_format()

◆ decode_decimal128()

◆ decode_decimal32()

◆ decode_decimal64()

◆ encode_decimal128()

◆ encode_decimal32()

◆ encode_decimal64()