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 , enum machine_mode, 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, enum machine_mode)
void	decimal_real_to_integer2 (HOST_WIDE_INT , HOST_WIDE_INT , const REAL_VALUE_TYPE *)
HOST_WIDE_INT	decimal_real_to_integer (const REAL_VALUE_TYPE *)
bool	decimal_real_arithmetic (REAL_VALUE_TYPE , enum tree_code, const REAL_VALUE_TYPE , const REAL_VALUE_TYPE *)

Function Documentation

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

     If either operand is non-decimal, create temporary versions.

     Convert into decNumber form for comparison operation.

     Finally, do the comparison.

     Return the comparison result.

void decimal_do_fix_trunc	(	REAL_VALUE_TYPE *	,
		const REAL_VALUE_TYPE *
	)

bool decimal_real_arithmetic	(	REAL_VALUE_TYPE *	r,
		enum tree_code	code,
		const REAL_VALUE_TYPE *	op0,
		const REAL_VALUE_TYPE *	op1
	)

   Perform the decimal floating point operation described by CODE.
   For a unary operation, OP1 will be NULL.  This function returns
   true if the result may be inexact due to loss of precision.

     If either operand is non-decimal, create temporaries.

           Flip sign bit.

           Keep sign field in sync.

           Clear sign bit.

           Keep sign field in sync.

void decimal_real_convert	(	REAL_VALUE_TYPE *	r,
		enum machine_mode	mode,
		const REAL_VALUE_TYPE *	a
	)

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

Referenced by real_nan().

void decimal_real_from_string	(	REAL_VALUE_TYPE *	,
		const char *
	)

void decimal_real_maxval	(	REAL_VALUE_TYPE *	,
		int	,
		enum	machine_mode
	)

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.

     decimal128ToString requires space for at least 24 characters;
     Require two more for suffix.

HOST_WIDE_INT decimal_real_to_integer ( const REAL_VALUE_TYPE * )

void decimal_real_to_integer2	(	HOST_WIDE_INT *	plow,
		HOST_WIDE_INT *	phigh,
		const REAL_VALUE_TYPE *	r
	)

   Likewise, but to an integer pair, HI+LOW.

     Convert to REAL_VALUE_TYPE and call appropriate conversion
     function.

References decimal_from_binary().

Referenced by real_can_shorten_arithmetic().

void decimal_round_for_format	(	const struct real_format *	,
		REAL_VALUE_TYPE *
	)

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

   Decode an IEEE 754 decimal128 type into a real.

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.

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 memcpy().

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 memcpy().

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

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

   Encode a real into an IEEE 754 decimal32 type.

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

   Encode a real into an IEEE 754 decimal64 type.

Referenced by decode_vax_d().

Functions

Function Documentation