Functions
static void	decimal_from_decnumber ()
void	decimal_real_from_string ()
static void	decimal_to_decnumber ()
void	encode_decimal32 (const struct real_format fmt, long buf, const REAL_VALUE_TYPE *r)
void	decode_decimal32 (const struct real_format fmt, REAL_VALUE_TYPE r, const long *buf)
void	encode_decimal64 (const struct real_format fmt, long buf, const REAL_VALUE_TYPE *r)
void	decode_decimal64 (const struct real_format fmt, REAL_VALUE_TYPE r, const long *buf)
void	encode_decimal128 (const struct real_format fmt, long buf, const REAL_VALUE_TYPE *r)
void	decode_decimal128 (const struct real_format fmt, REAL_VALUE_TYPE r, const long *buf)
static void	decimal_to_binary (REAL_VALUE_TYPE to, const REAL_VALUE_TYPE from, enum machine_mode mode)
static void	decimal_from_binary ()
int	decimal_do_compare (const REAL_VALUE_TYPE a, const REAL_VALUE_TYPE b, int nan_result)
void	decimal_round_for_format ()
void	decimal_real_convert (REAL_VALUE_TYPE r, enum machine_mode mode, const REAL_VALUE_TYPE a)
void	decimal_real_to_decimal (char str, const REAL_VALUE_TYPE r_orig, size_t buf_size, size_t digits, int crop_trailing_zeros)
static bool	decimal_do_add (REAL_VALUE_TYPE r, const REAL_VALUE_TYPE op0, const REAL_VALUE_TYPE *op1, int subtract_p)
static bool	decimal_do_multiply (REAL_VALUE_TYPE r, const REAL_VALUE_TYPE op0, const REAL_VALUE_TYPE *op1)
static bool	decimal_do_divide (REAL_VALUE_TYPE r, const REAL_VALUE_TYPE op0, const REAL_VALUE_TYPE *op1)
void	decimal_do_fix_trunc ()
HOST_WIDE_INT	decimal_real_to_integer ()
void	decimal_real_to_integer2 (HOST_WIDE_INT plow, HOST_WIDE_INT phigh, const REAL_VALUE_TYPE *r)
bool	decimal_real_arithmetic (REAL_VALUE_TYPE r, enum tree_code code, const REAL_VALUE_TYPE op0, const REAL_VALUE_TYPE *op1)
void	decimal_real_maxval ()

Function Documentation

static bool decimal_do_add	(	REAL_VALUE_TYPE *	r,
		const REAL_VALUE_TYPE *	op0,
		const REAL_VALUE_TYPE *	op1,
		int	subtract_p
	)

static

References decimal_from_decnumber(), and decimal_to_decnumber().

Referenced by decimal_real_arithmetic().

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

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.

References decimal_from_binary().

Referenced by do_compare().

static bool decimal_do_divide	(	REAL_VALUE_TYPE *	r,
		const REAL_VALUE_TYPE *	op0,
		const REAL_VALUE_TYPE *	op1
	)

static

Compute R = OP0 / OP1.

References decimal_from_decnumber(), and decimal_to_decnumber().

Referenced by decimal_real_arithmetic().

void decimal_do_fix_trunc ( )

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

References decimal_from_decnumber().

Referenced by decimal_real_arithmetic(), and do_fix_trunc().

static bool decimal_do_multiply	(	REAL_VALUE_TYPE *	r,
		const REAL_VALUE_TYPE *	op0,
		const REAL_VALUE_TYPE *	op1
	)

static

Compute R = OP0 * OP1.

References decimal_from_decnumber(), and decimal_to_decnumber().

Referenced by decimal_real_arithmetic().

static void decimal_from_binary ( )

static

Helper function to convert from a binary real internal
   representation.

References decimal_real_from_string(), and real_to_decimal().

Referenced by decimal_do_compare(), decimal_real_arithmetic(), and decimal_real_convert().

static void decimal_from_decnumber ( )

static

Initialize R (a real with the decimal flag set) from DN.  Can
   utilize status passed in via CONTEXT, if a previous operation had
   interesting status.

References memset(), rvc_inf, rvc_nan, and rvc_normal.

Referenced by decimal_do_add(), decimal_do_divide(), decimal_do_fix_trunc(), decimal_do_multiply(), decimal_real_from_string(), decimal_round_for_format(), decode_decimal128(), decode_decimal32(), and decode_decimal64().

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.

References real_format::b, decimal_do_add(), decimal_do_divide(), decimal_do_fix_trunc(), decimal_do_multiply(), decimal_from_binary(), real_compare(), and rvc_nan.

Referenced by real_arithmetic().

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.

References real_format::b, decimal_from_binary(), and decimal_to_binary().

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

void decimal_real_from_string ( )

Create decimal encoded R from string S.

References decimal_from_decnumber().

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

void decimal_real_maxval ( )

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().

Referenced by real_maxval().

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.

Referenced by real_to_decimal_for_mode().

HOST_WIDE_INT decimal_real_to_integer ( )

Render decimal float value R as an integer.

References real_from_string(), and real_to_integer().

Referenced by real_to_integer().

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.

References real_from_string(), and real_to_integer2().

Referenced by real_to_integer2().

void decimal_round_for_format ( )

Helper to round_for_format, handling decimal float types.

References decimal_double_format, decimal_from_decnumber(), decimal_quad_format, decimal_single_format, and rvc_normal.

Referenced by round_for_format().

static void decimal_to_binary	(	REAL_VALUE_TYPE *	to,
		const REAL_VALUE_TYPE *	from,
		enum machine_mode	mode
	)

static

Helper function to convert from a binary real internal
   representation.

References real_from_string3().

Referenced by decimal_real_convert().

static void decimal_to_decnumber ( )

static

Initialize a decNumber from a REAL_VALUE_TYPE.

References dconst1, dconst2, dconsthalf, dconstm1, rvc_inf, rvc_nan, rvc_normal, and rvc_zero.

Referenced by decimal_do_add(), decimal_do_divide(), decimal_do_multiply(), encode_decimal128(), encode_decimal32(), and encode_decimal64().

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(), and memcpy().

Referenced by decode_decimal_quad().

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

Decode an IEEE 754 decimal32 type into a real.

References decimal_from_decnumber(), and memcpy().

Referenced by decode_decimal_single().

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(), and memcpy().

Referenced by decode_decimal_double().

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(), and memcpy().

Referenced by encode_decimal_quad().

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

Encode a real into an IEEE 754 decimal32 type.

References decimal_to_decnumber(), and memcpy().

Referenced by encode_decimal_single().

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(), and memcpy().

Referenced by encode_decimal_double().

Functions

Function Documentation