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/* Copyright (C) 2007 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 2, or (at your option) any later
version.
In addition to the permissions in the GNU General Public License, the
Free Software Foundation gives you unlimited permission to link the
compiled version of this file into combinations with other programs,
and to distribute those combinations without any restriction coming
from the use of this file. (The General Public License restrictions
do apply in other respects; for example, they cover modification of
the file, and distribution when not linked into a combine
executable.)
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 COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#define BID_128RES
#include "bid_internal.h"
/*****************************************************************************
* BID128 nextup
****************************************************************************/
#if DECIMAL_CALL_BY_REFERENCE
void
__bid128_nextup (UINT128 * pres,
UINT128 *
px _EXC_FLAGS_PARAM _EXC_MASKS_PARAM _EXC_INFO_PARAM) {
UINT128 x = *px;
#else
UINT128
__bid128_nextup (UINT128 x _EXC_FLAGS_PARAM _EXC_MASKS_PARAM
_EXC_INFO_PARAM) {
#endif
UINT128 res;
UINT64 x_sign;
UINT64 x_exp;
int exp;
BID_UI64DOUBLE tmp1;
int x_nr_bits;
int q1, ind;
UINT128 C1; // C1.w[1], C1.w[0] represent x_signif_hi, x_signif_lo (UINT64)
BID_SWAP128(x);
// unpack the argument
x_sign = x.w[1] & MASK_SIGN; // 0 for positive, MASK_SIGN for negative
x_exp = x.w[1] & MASK_EXP; // biased and shifted left 49 bit positions
C1.w[1] = x.w[1] & MASK_COEFF;
C1.w[0] = x.w[0];
// check for NaN or Infinity
if ((x.w[1] & MASK_SPECIAL) == MASK_SPECIAL) {
// x is special
if ((x.w[1] & MASK_NAN) == MASK_NAN) { // x is NAN
if ((x.w[1] & MASK_SNAN) == MASK_SNAN) { // x is SNAN
// set invalid flag
*pfpsf |= INVALID_EXCEPTION;
// return quiet (x)
res.w[1] = x.w[1] & 0xfdffffffffffffffull;
res.w[0] = x.w[0];
} else { // x is QNaN
// return x
res.w[1] = x.w[1];
res.w[0] = x.w[0];
}
} else { // x is not NaN, so it must be infinity
if (!x_sign) { // x is +inf
res.w[1] = 0x7800000000000000ull; // +inf
res.w[0] = 0x0000000000000000ull;
} else { // x is -inf
res.w[1] = 0xdfffed09bead87c0ull; // -MAXFP = -999...99 * 10^emax
res.w[0] = 0x378d8e63ffffffffull;
}
}
BID_RETURN (res);
}
// test for non-canonical values of the argument x
// - values whose encoding begins with x00, x01, or x10 and whose
// coefficient is larger than 10^34 -1, or
// - values whose encoding begins with x1100, x1101, x1110 (if NaNs
// and infinitis were eliminated already this test is reduced to
// checking for x10x)
if ((((C1.w[1] > 0x0001ed09bead87c0ull) ||
((C1.w[1] == 0x0001ed09bead87c0ull) && (C1.w[0] > 0x378d8e63ffffffffull)))
&& ((x.w[1] & 0x6000000000000000ull) != 0x6000000000000000ull)) ||
((x.w[1] & 0x6000000000000000ull) == 0x6000000000000000ull)) {
x.w[1] = 0;
x.w[0] = 0;
C1.w[1] = 0;
C1.w[0] = 0;
}
if ((C1.w[1] == 0x0ull) && (C1.w[0] == 0x0ull)) {
// x is +/-0
res.w[1] = 0x0000000000000000ull; // +1 * 10^emin
res.w[0] = 0x0000000000000001ull;
} else { // x is not special and is not zero
if (x.w[1] == 0x5fffed09bead87c0ull
&& x.w[0] == 0x378d8e63ffffffffull) {
// x = +MAXFP = 999...99 * 10^emax
res.w[1] = 0x7800000000000000ull; // +inf
res.w[0] = 0x0000000000000000ull;
} else if (x.w[1] == 0x8000000000000000ull
&& x.w[0] == 0x0000000000000001ull) {
// x = -MINFP = 1...99 * 10^emin
res.w[1] = 0x8000000000000000ull; // -0
res.w[0] = 0x0000000000000000ull;
} else { // -MAXFP <= x <= -MINFP - 1 ulp OR MINFP <= x <= MAXFP - 1 ulp
// can add/subtract 1 ulp to the significand
// Note: we could check here if x >= 10^34 to speed up the case q1 = 34
// q1 = nr. of decimal digits in x
// determine first the nr. of bits in x
if (C1.w[1] == 0) {
if (C1.w[0] >= 0x0020000000000000ull) { // x >= 2^53
// split the 64-bit value in two 32-bit halves to avoid rnd errors
if (C1.w[0] >= 0x0000000100000000ull) { // x >= 2^32
tmp1.d = (double) (C1.w[0] >> 32); // exact conversion
x_nr_bits =
33 + ((((unsigned int) (tmp1.ui64 >> 52)) & 0x7ff) -
0x3ff);
} else { // x < 2^32
tmp1.d = (double) (C1.w[0]); // exact conversion
x_nr_bits =
1 + ((((unsigned int) (tmp1.ui64 >> 52)) & 0x7ff) - 0x3ff);
}
} else { // if x < 2^53
tmp1.d = (double) C1.w[0]; // exact conversion
x_nr_bits =
1 + ((((unsigned int) (tmp1.ui64 >> 52)) & 0x7ff) - 0x3ff);
}
} else { // C1.w[1] != 0 => nr. bits = 64 + nr_bits (C1.w[1])
tmp1.d = (double) C1.w[1]; // exact conversion
x_nr_bits =
65 + ((((unsigned int) (tmp1.ui64 >> 52)) & 0x7ff) - 0x3ff);
}
q1 = __bid_nr_digits[x_nr_bits - 1].digits;
if (q1 == 0) {
q1 = __bid_nr_digits[x_nr_bits - 1].digits1;
if (C1.w[1] > __bid_nr_digits[x_nr_bits - 1].threshold_hi
|| (C1.w[1] == __bid_nr_digits[x_nr_bits - 1].threshold_hi
&& C1.w[0] >= __bid_nr_digits[x_nr_bits - 1].threshold_lo))
q1++;
}
// if q1 < P34 then pad the significand with zeros
if (q1 < P34) {
exp = (x_exp >> 49) - 6176;
if (exp + 6176 > P34 - q1) {
ind = P34 - q1; // 1 <= ind <= P34 - 1
// pad with P34 - q1 zeros, until exponent = emin
// C1 = C1 * 10^ind
if (q1 <= 19) { // 64-bit C1
if (ind <= 19) { // 64-bit 10^ind and 64-bit C1
__mul_64x64_to_128MACH (C1, C1.w[0], __bid_ten2k64[ind]);
} else { // 128-bit 10^ind and 64-bit C1
__mul_128x64_to_128 (C1, C1.w[0], __bid_ten2k128[ind - 20]);
}
} else { // C1 is (most likely) 128-bit
if (ind <= 14) { // 64-bit 10^ind and 128-bit C1 (most likely)
__mul_128x64_to_128 (C1, __bid_ten2k64[ind], C1);
} else if (ind <= 19) { // 64-bit 10^ind and 64-bit C1 (q1 <= 19)
__mul_64x64_to_128MACH (C1, C1.w[0], __bid_ten2k64[ind]);
} else { // 128-bit 10^ind and 64-bit C1 (C1 must be 64-bit)
__mul_128x64_to_128 (C1, C1.w[0], __bid_ten2k128[ind - 20]);
}
}
x_exp = x_exp - ((UINT64) ind << 49);
} else { // pad with zeros until the exponent reaches emin
ind = exp + 6176;
// C1 = C1 * 10^ind
if (ind <= 19) { // 1 <= P34 - q1 <= 19 <=> 15 <= q1 <= 33
if (q1 <= 19) { // 64-bit C1, 64-bit 10^ind
__mul_64x64_to_128MACH (C1, C1.w[0], __bid_ten2k64[ind]);
} else { // 20 <= q1 <= 33 => 128-bit C1, 64-bit 10^ind
__mul_128x64_to_128 (C1, __bid_ten2k64[ind], C1);
}
} else { // if 20 <= P34 - q1 <= 33 <=> 1 <= q1 <= 14 =>
// 64-bit C1, 128-bit 10^ind
__mul_128x64_to_128 (C1, C1.w[0], __bid_ten2k128[ind - 20]);
}
x_exp = EXP_MIN;
}
}
if (!x_sign) { // x > 0
// add 1 ulp (add 1 to the significand)
C1.w[0]++;
if (C1.w[0] == 0)
C1.w[1]++;
if (C1.w[1] == 0x0001ed09bead87c0ull &&
C1.w[0] == 0x378d8e6400000000ull) { // if C1 = 10^34
C1.w[1] = 0x0000314dc6448d93ull; // C1 = 10^33
C1.w[0] = 0x38c15b0a00000000ull;
x_exp = x_exp + EXP_P1;
}
} else { // x < 0
// subtract 1 ulp (subtract 1 from the significand)
C1.w[0]--;
if (C1.w[0] == 0xffffffffffffffffull)
C1.w[1]--;
if (x_exp != 0 && C1.w[1] == 0x0000314dc6448d93ull &&
C1.w[0] == 0x38c15b09ffffffffull) { // if C1 = 10^33 - 1
C1.w[1] = 0x0001ed09bead87c0ull; // C1 = 10^34 - 1
C1.w[0] = 0x378d8e63ffffffffull;
x_exp = x_exp - EXP_P1;
}
}
// assemble the result
res.w[1] = x_sign | x_exp | C1.w[1];
res.w[0] = C1.w[0];
} // end -MAXFP <= x <= -MINFP - 1 ulp OR MINFP <= x <= MAXFP - 1 ulp
} // end x is not special and is not zero
BID_RETURN (res);
}
/*****************************************************************************
* BID128 nextdown
****************************************************************************/
#if DECIMAL_CALL_BY_REFERENCE
void
__bid128_nextdown (UINT128 * pres,
UINT128 *
px _EXC_FLAGS_PARAM _EXC_MASKS_PARAM _EXC_INFO_PARAM) {
UINT128 x = *px;
#else
UINT128
__bid128_nextdown (UINT128 x _EXC_FLAGS_PARAM _EXC_MASKS_PARAM
_EXC_INFO_PARAM) {
#endif
UINT128 res;
UINT64 x_sign;
UINT64 x_exp;
int exp;
BID_UI64DOUBLE tmp1;
int x_nr_bits;
int q1, ind;
UINT128 C1; // C1.w[1], C1.w[0] represent x_signif_hi, x_signif_lo (UINT64)
BID_SWAP128(x);
// unpack the argument
x_sign = x.w[1] & MASK_SIGN; // 0 for positive, MASK_SIGN for negative
x_exp = x.w[1] & MASK_EXP; // biased and shifted left 49 bit positions
C1.w[1] = x.w[1] & MASK_COEFF;
C1.w[0] = x.w[0];
// check for NaN or Infinity
if ((x.w[1] & MASK_SPECIAL) == MASK_SPECIAL) {
// x is special
if ((x.w[1] & MASK_NAN) == MASK_NAN) { // x is NAN
if ((x.w[1] & MASK_SNAN) == MASK_SNAN) { // x is SNAN
// set invalid flag
*pfpsf |= INVALID_EXCEPTION;
// return quiet (x)
res.w[1] = x.w[1] & 0xfdffffffffffffffull;
res.w[0] = x.w[0];
} else { // x is QNaN
// return x
res.w[1] = x.w[1];
res.w[0] = x.w[0];
}
} else { // x is not NaN, so it must be infinity
if (!x_sign) { // x is +inf
res.w[1] = 0x5fffed09bead87c0ull; // +MAXFP = +999...99 * 10^emax
res.w[0] = 0x378d8e63ffffffffull;
} else { // x is -inf
res.w[1] = 0xf800000000000000ull; // -inf
res.w[0] = 0x0000000000000000ull;
}
}
BID_RETURN (res);
}
// test for non-canonical values of the argument x
// - values whose encoding begins with x00, x01, or x10 and whose
// coefficient is larger than 10^34 -1, or
// - values whose encoding begins with x1100, x1101, x1110 (if NaNs
// and infinitis were eliminated already this test is reduced to
// checking for x10x)
if ((((C1.w[1] > 0x0001ed09bead87c0ull) || ((C1.w[1] == 0x0001ed09bead87c0ull)
&& (C1.w[0] > 0x378d8e63ffffffffull))) &&
((x.w[1] & 0x6000000000000000ull) != 0x6000000000000000ull)) ||
((x.w[1] & 0x6000000000000000ull) == 0x6000000000000000ull)) {
x.w[1] = 0;
x.w[0] = 0;
C1.w[1] = 0;
C1.w[0] = 0;
}
if ((C1.w[1] == 0x0ull) && (C1.w[0] == 0x0ull)) {
// x is +/-0
res.w[1] = 0x8000000000000000ull; // -1 * 10^emin
res.w[0] = 0x0000000000000001ull;
} else { // x is not special and is not zero
if (x.w[1] == 0xdfffed09bead87c0ull
&& x.w[0] == 0x378d8e63ffffffffull) {
// x = -MAXFP = -999...99 * 10^emax
res.w[1] = 0xf800000000000000ull; // -inf
res.w[0] = 0x0000000000000000ull;
} else if (x.w[1] == 0x0ull && x.w[0] == 0x0000000000000001ull) { // +MINFP
res.w[1] = 0x0000000000000000ull; // +0
res.w[0] = 0x0000000000000000ull;
} else { // -MAXFP <= x <= -MINFP - 1 ulp OR MINFP <= x <= MAXFP - 1 ulp
// can add/subtract 1 ulp to the significand
// Note: we could check here if x >= 10^34 to speed up the case q1 = 34
// q1 = nr. of decimal digits in x
// determine first the nr. of bits in x
if (C1.w[1] == 0) {
if (C1.w[0] >= 0x0020000000000000ull) { // x >= 2^53
// split the 64-bit value in two 32-bit halves to avoid rnd errors
if (C1.w[0] >= 0x0000000100000000ull) { // x >= 2^32
tmp1.d = (double) (C1.w[0] >> 32); // exact conversion
x_nr_bits =
33 + ((((unsigned int) (tmp1.ui64 >> 52)) & 0x7ff) -
0x3ff);
} else { // x < 2^32
tmp1.d = (double) (C1.w[0]); // exact conversion
x_nr_bits =
1 + ((((unsigned int) (tmp1.ui64 >> 52)) & 0x7ff) - 0x3ff);
}
} else { // if x < 2^53
tmp1.d = (double) C1.w[0]; // exact conversion
x_nr_bits =
1 + ((((unsigned int) (tmp1.ui64 >> 52)) & 0x7ff) - 0x3ff);
}
} else { // C1.w[1] != 0 => nr. bits = 64 + nr_bits (C1.w[1])
tmp1.d = (double) C1.w[1]; // exact conversion
x_nr_bits =
65 + ((((unsigned int) (tmp1.ui64 >> 52)) & 0x7ff) - 0x3ff);
}
q1 = __bid_nr_digits[x_nr_bits - 1].digits;
if (q1 == 0) {
q1 = __bid_nr_digits[x_nr_bits - 1].digits1;
if (C1.w[1] > __bid_nr_digits[x_nr_bits - 1].threshold_hi
|| (C1.w[1] == __bid_nr_digits[x_nr_bits - 1].threshold_hi
&& C1.w[0] >= __bid_nr_digits[x_nr_bits - 1].threshold_lo))
q1++;
}
// if q1 < P then pad the significand with zeros
if (q1 < P34) {
exp = (x_exp >> 49) - 6176;
if (exp + 6176 > P34 - q1) {
ind = P34 - q1; // 1 <= ind <= P34 - 1
// pad with P34 - q1 zeros, until exponent = emin
// C1 = C1 * 10^ind
if (q1 <= 19) { // 64-bit C1
if (ind <= 19) { // 64-bit 10^ind and 64-bit C1
__mul_64x64_to_128MACH (C1, C1.w[0], __bid_ten2k64[ind]);
} else { // 128-bit 10^ind and 64-bit C1
__mul_128x64_to_128 (C1, C1.w[0], __bid_ten2k128[ind - 20]);
}
} else { // C1 is (most likely) 128-bit
if (ind <= 14) { // 64-bit 10^ind and 128-bit C1 (most likely)
__mul_128x64_to_128 (C1, __bid_ten2k64[ind], C1);
} else if (ind <= 19) { // 64-bit 10^ind and 64-bit C1 (q1 <= 19)
__mul_64x64_to_128MACH (C1, C1.w[0], __bid_ten2k64[ind]);
} else { // 128-bit 10^ind and 64-bit C1 (C1 must be 64-bit)
__mul_128x64_to_128 (C1, C1.w[0], __bid_ten2k128[ind - 20]);
}
}
x_exp = x_exp - ((UINT64) ind << 49);
} else { // pad with zeros until the exponent reaches emin
ind = exp + 6176;
// C1 = C1 * 10^ind
if (ind <= 19) { // 1 <= P34 - q1 <= 19 <=> 15 <= q1 <= 33
if (q1 <= 19) { // 64-bit C1, 64-bit 10^ind
__mul_64x64_to_128MACH (C1, C1.w[0], __bid_ten2k64[ind]);
} else { // 20 <= q1 <= 33 => 128-bit C1, 64-bit 10^ind
__mul_128x64_to_128 (C1, __bid_ten2k64[ind], C1);
}
} else { // if 20 <= P34 - q1 <= 33 <=> 1 <= q1 <= 14 =>
// 64-bit C1, 128-bit 10^ind
__mul_128x64_to_128 (C1, C1.w[0], __bid_ten2k128[ind - 20]);
}
x_exp = EXP_MIN;
}
}
if (x_sign) { // x < 0
// add 1 ulp (add 1 to the significand)
C1.w[0]++;
if (C1.w[0] == 0)
C1.w[1]++;
if (C1.w[1] == 0x0001ed09bead87c0ull &&
C1.w[0] == 0x378d8e6400000000ull) { // if C1 = 10^34
C1.w[1] = 0x0000314dc6448d93ull; // C1 = 10^33
C1.w[0] = 0x38c15b0a00000000ull;
x_exp = x_exp + EXP_P1;
}
} else { // x > 0
// subtract 1 ulp (subtract 1 from the significand)
C1.w[0]--;
if (C1.w[0] == 0xffffffffffffffffull)
C1.w[1]--;
if (x_exp != 0 && C1.w[1] == 0x0000314dc6448d93ull &&
C1.w[0] == 0x38c15b09ffffffffull) { // if C1 = 10^33 - 1
C1.w[1] = 0x0001ed09bead87c0ull; // C1 = 10^34 - 1
C1.w[0] = 0x378d8e63ffffffffull;
x_exp = x_exp - EXP_P1;
}
}
// assemble the result
res.w[1] = x_sign | x_exp | C1.w[1];
res.w[0] = C1.w[0];
} // end -MAXFP <= x <= -MINFP - 1 ulp OR MINFP <= x <= MAXFP - 1 ulp
} // end x is not special and is not zero
BID_RETURN (res);
}
/*****************************************************************************
* BID128 nextafter
****************************************************************************/
#if DECIMAL_CALL_BY_REFERENCE
void
__bid128_nextafter (UINT128 * pres, UINT128 * px,
UINT128 *
py _EXC_FLAGS_PARAM _EXC_MASKS_PARAM _EXC_INFO_PARAM)
{
UINT128 x = *px;
UINT128 y = *py;
UINT128 xnswp = *px;
UINT128 ynswp = *py;
#else
UINT128
__bid128_nextafter (UINT128 x,
UINT128 y _EXC_FLAGS_PARAM _EXC_MASKS_PARAM
_EXC_INFO_PARAM) {
UINT128 xnswp = x;
UINT128 ynswp = y;
#endif
UINT128 res;
UINT128 tmp1, tmp2;
FPSC tmp_fpsf = 0; // dummy fpsf for calls to comparison functions
int res1, res2;
BID_SWAP128(x);
BID_SWAP128(y);
// check for NaNs
if (((x.w[1] & MASK_SPECIAL) == MASK_SPECIAL)
|| ((y.w[1] & MASK_SPECIAL) == MASK_SPECIAL)) {
// x is special or y is special
if ((x.w[1] & MASK_NAN) == MASK_NAN) { // x is NAN
if ((x.w[1] & MASK_SNAN) == MASK_SNAN) { // x is SNAN
// set invalid flag
*pfpsf |= INVALID_EXCEPTION;
// return quiet (x)
res.w[1] = x.w[1] & 0xfdffffffffffffffull;
res.w[0] = x.w[0];
} else { // x is QNaN
if ((y.w[1] & MASK_SNAN) == MASK_SNAN) { // y is SNAN
// set invalid flag
*pfpsf |= INVALID_EXCEPTION;
}
// return x
res.w[1] = x.w[1];
res.w[0] = x.w[0];
}
BID_RETURN (res);
} else if ((y.w[1] & MASK_NAN) == MASK_NAN) { // y is NAN
if ((y.w[1] & MASK_SNAN) == MASK_SNAN) { // y is SNAN
// set invalid flag
*pfpsf |= INVALID_EXCEPTION;
// return quiet (y)
res.w[1] = y.w[1] & 0xfdffffffffffffffull;
res.w[0] = y.w[0];
} else { // y is QNaN
// return y
res.w[1] = y.w[1];
res.w[0] = y.w[0];
}
BID_RETURN (res);
} else {
; // let infinities fall through
}
}
// neither x nor y is NaN
tmp_fpsf = *pfpsf; // save fpsf
#if DECIMAL_CALL_BY_REFERENCE
__bid128_quiet_equal (&res1, &xnswp,
&ynswp _EXC_FLAGS_ARG _EXC_MASKS_ARG _EXC_INFO_ARG);
__bid128_quiet_greater (&res2, &xnswp,
&ynswp _EXC_FLAGS_ARG _EXC_MASKS_ARG _EXC_INFO_ARG);
#else
res1 =
__bid128_quiet_equal (xnswp,
ynswp _EXC_FLAGS_ARG _EXC_MASKS_ARG _EXC_INFO_ARG);
res2 =
__bid128_quiet_greater (xnswp,
ynswp _EXC_FLAGS_ARG _EXC_MASKS_ARG
_EXC_INFO_ARG);
#endif
*pfpsf = tmp_fpsf; // restore fpsf
if (res1) { // x = y
// return x with the sign of y
res.w[1] =
(x.w[1] & 0x7fffffffffffffffull) | (y.w[1] & 0x8000000000000000ull);
res.w[0] = x.w[0];
} else if (res2) { // x > y
#if DECIMAL_CALL_BY_REFERENCE
__bid128_nextdown (&res,
&xnswp _EXC_FLAGS_ARG _EXC_MASKS_ARG _EXC_INFO_ARG);
#else
res =
__bid128_nextdown (xnswp _EXC_FLAGS_ARG _EXC_MASKS_ARG _EXC_INFO_ARG);
#endif
BID_SWAP128(res);
} else { // x < y
#if DECIMAL_CALL_BY_REFERENCE
__bid128_nextup (&res,
&xnswp _EXC_FLAGS_ARG _EXC_MASKS_ARG _EXC_INFO_ARG);
#else
res = __bid128_nextup (xnswp _EXC_FLAGS_ARG _EXC_MASKS_ARG _EXC_INFO_ARG);
#endif
BID_SWAP128(res);
}
// if the operand x is finite but the result is infinite, signal
// overflow and inexact
if (((x.w[1] & MASK_SPECIAL) != MASK_SPECIAL)
&& ((res.w[1] & MASK_SPECIAL) == MASK_SPECIAL)) {
// set the inexact flag
*pfpsf |= INEXACT_EXCEPTION;
// set the overflow flag
*pfpsf |= OVERFLOW_EXCEPTION;
}
// if the result is in (-10^emin, 10^emin), and is different from the
// operand x, signal underflow and inexact
tmp1.w[HIGH_128W] = 0x0000314dc6448d93ull;
tmp1.w[LOW_128W] = 0x38c15b0a00000000ull; // +100...0[34] * 10^emin
tmp2.w[HIGH_128W] = res.w[1] & 0x7fffffffffffffffull;
tmp2.w[LOW_128W] = res.w[0];
tmp_fpsf = *pfpsf; // save fpsf
#if DECIMAL_CALL_BY_REFERENCE
__bid128_quiet_greater (&res1, &tmp1,
&tmp2 _EXC_FLAGS_ARG _EXC_MASKS_ARG
_EXC_INFO_ARG);
__bid128_quiet_not_equal (&res2, &xnswp,
&res _EXC_FLAGS_ARG _EXC_MASKS_ARG
_EXC_INFO_ARG);
#else
res1 =
__bid128_quiet_greater (tmp1,
tmp2 _EXC_FLAGS_ARG _EXC_MASKS_ARG
_EXC_INFO_ARG);
res2 =
__bid128_quiet_not_equal (xnswp,
res _EXC_FLAGS_ARG _EXC_MASKS_ARG
_EXC_INFO_ARG);
#endif
*pfpsf = tmp_fpsf; // restore fpsf
if (res1 && res2) {
// set the inexact flag
*pfpsf |= INEXACT_EXCEPTION;
// set the underflow flag
*pfpsf |= UNDERFLOW_EXCEPTION;
}
BID_RETURN (res);
}
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