#if DECIMAL_CALL_BY_REFERENCE
void
-__bid64_mul (UINT64 * pres, UINT64 * px,
+bid64_mul (UINT64 * pres, UINT64 * px,
UINT64 *
py _RND_MODE_PARAM _EXC_FLAGS_PARAM _EXC_MASKS_PARAM
_EXC_INFO_PARAM) {
#else
UINT64
-__bid64_mul (UINT64 x,
+bid64_mul (UINT64 x,
UINT64 y _RND_MODE_PARAM _EXC_FLAGS_PARAM
_EXC_MASKS_PARAM _EXC_INFO_PARAM) {
#endif
UINT64 C64, remainder_h, carry, CY, res;
UINT64 valid_x, valid_y;
int_double tempx, tempy;
- int extra_digits, exponent_x = 0, exponent_y = 0, bin_expon_cx, bin_expon_cy,
+ int extra_digits, exponent_x, exponent_y, bin_expon_cx, bin_expon_cy,
bin_expon_product;
int rmode, digits_p, bp, amount, amount2, final_exponent, round_up;
unsigned status, uf_status;
if ((x & SNAN_MASK64) == SNAN_MASK64) // sNaN
__set_status_flags (pfpsf, INVALID_EXCEPTION);
#endif
- BID_RETURN (x & QUIET_MASK64);
+ BID_RETURN (coefficient_x & QUIET_MASK64);
}
// x is Infinity?
if ((x & INFINITY_MASK64) == INFINITY_MASK64) {
// check if y is 0
- if (((y & SPECIAL_ENCODING_MASK64) != SPECIAL_ENCODING_MASK64)
- && !(y << (64 - 53))) {
+ if (((y & INFINITY_MASK64) != INFINITY_MASK64)
+ && !coefficient_y) {
#ifdef SET_STATUS_FLAGS
__set_status_flags (pfpsf, INVALID_EXCEPTION);
#endif
// check if y is NaN
if ((y & NAN_MASK64) == NAN_MASK64)
// y==NaN , return NaN
- BID_RETURN (y & QUIET_MASK64);
+ BID_RETURN (coefficient_y & QUIET_MASK64);
// otherwise return +/-Inf
BID_RETURN (((x ^ y) & 0x8000000000000000ull) | INFINITY_MASK64);
}
if ((y & SNAN_MASK64) == SNAN_MASK64) // sNaN
__set_status_flags (pfpsf, INVALID_EXCEPTION);
#endif
- BID_RETURN (y & QUIET_MASK64);
+ BID_RETURN (coefficient_y & QUIET_MASK64);
}
// y is Infinity?
if ((y & INFINITY_MASK64) == INFINITY_MASK64) {
// check if x is 0
- if (((x & SPECIAL_ENCODING_MASK64) != SPECIAL_ENCODING_MASK64)
- && !(x << (64 - 53))) {
+ if (!coefficient_x) {
__set_status_flags (pfpsf, INVALID_EXCEPTION);
// x==0, return NaN
BID_RETURN (NAN_MASK64);
__tight_bin_range_128 (bp, P, bin_expon_product);
// get number of decimal digits in the product
- digits_p = __bid_estimate_decimal_digits[bp];
- if (!(__unsigned_compare_gt_128 (__bid_power10_table_128[digits_p], P)))
- digits_p++; // if __bid_power10_table_128[digits_p] <= P
+ digits_p = estimate_decimal_digits[bp];
+ if (!(__unsigned_compare_gt_128 (power10_table_128[digits_p], P)))
+ digits_p++; // if power10_table_128[digits_p] <= P
// determine number of decimal digits to be rounded out
extra_digits = digits_p - MAX_FORMAT_DIGITS;
uf_status = UNDERFLOW_EXCEPTION;
if (final_exponent == -1) {
- __add_128_64 (PU, P, __bid_round_const_table[rmode][extra_digits]);
+ __add_128_64 (PU, P, round_const_table[rmode][extra_digits]);
if (__unsigned_compare_ge_128
- (PU, __bid_power10_table_128[extra_digits + 16]))
+ (PU, power10_table_128[extra_digits + 16]))
uf_status = 0;
}
extra_digits -= final_exponent;
final_exponent = 0;
if (extra_digits > 17) {
- __mul_128x128_full (Q_high, Q_low, P, __bid_reciprocals10_128[16]);
+ __mul_128x128_full (Q_high, Q_low, P, reciprocals10_128[16]);
- amount = __bid_recip_scale[16];
+ amount = recip_scale[16];
__shr_128 (P, Q_high, amount);
// get sticky bits
remainder_h = remainder_h & Q_high.w[0];
extra_digits -= 16;
- if (remainder_h || (Q_low.w[1] > __bid_reciprocals10_128[16].w[1]
+ if (remainder_h || (Q_low.w[1] > reciprocals10_128[16].w[1]
|| (Q_low.w[1] ==
- __bid_reciprocals10_128[16].w[1]
+ reciprocals10_128[16].w[1]
&& Q_low.w[0] >=
- __bid_reciprocals10_128[16].w[0]))) {
+ reciprocals10_128[16].w[0]))) {
round_up = 1;
__set_status_flags (pfpsf,
UNDERFLOW_EXCEPTION |
// add a constant to P, depending on rounding mode
// 0.5*10^(digits_p - 16) for round-to-nearest
- __add_128_64 (P, P, __bid_round_const_table[rmode][extra_digits]);
+ __add_128_64 (P, P, round_const_table[rmode][extra_digits]);
// get P*(2^M[extra_digits])/10^extra_digits
__mul_128x128_full (Q_high, Q_low, P,
- __bid_reciprocals10_128[extra_digits]);
+ reciprocals10_128[extra_digits]);
// now get P/10^extra_digits: shift Q_high right by M[extra_digits]-128
- amount = __bid_recip_scale[extra_digits];
+ amount = recip_scale[extra_digits];
__shr_128 (C128, Q_high, amount);
C64 = __low_64 (C128);
#endif
if ((C64 & 1) && !round_up) {
// check whether fractional part of initial_P/10^extra_digits
- // is exactly .5
+ // is exactly .5
// this is the same as fractional part of
// (initial_P + 0.5*10^extra_digits)/10^extra_digits is exactly zero
// test whether fractional part is 0
if (!remainder_h
- && (Q_low.w[1] < __bid_reciprocals10_128[extra_digits].w[1]
- || (Q_low.w[1] == __bid_reciprocals10_128[extra_digits].w[1]
+ && (Q_low.w[1] < reciprocals10_128[extra_digits].w[1]
+ || (Q_low.w[1] == reciprocals10_128[extra_digits].w[1]
&& Q_low.w[0] <
- __bid_reciprocals10_128[extra_digits].w[0]))) {
+ reciprocals10_128[extra_digits].w[0]))) {
C64--;
}
}
case ROUNDING_TIES_AWAY:
// test whether fractional part is 0
if (remainder_h == 0x8000000000000000ull
- && (Q_low.w[1] < __bid_reciprocals10_128[extra_digits].w[1]
- || (Q_low.w[1] == __bid_reciprocals10_128[extra_digits].w[1]
+ && (Q_low.w[1] < reciprocals10_128[extra_digits].w[1]
+ || (Q_low.w[1] == reciprocals10_128[extra_digits].w[1]
&& Q_low.w[0] <
- __bid_reciprocals10_128[extra_digits].w[0])))
+ reciprocals10_128[extra_digits].w[0])))
status = EXACT_STATUS;
break;
case ROUNDING_DOWN:
case ROUNDING_TO_ZERO:
if (!remainder_h
- && (Q_low.w[1] < __bid_reciprocals10_128[extra_digits].w[1]
- || (Q_low.w[1] == __bid_reciprocals10_128[extra_digits].w[1]
+ && (Q_low.w[1] < reciprocals10_128[extra_digits].w[1]
+ || (Q_low.w[1] == reciprocals10_128[extra_digits].w[1]
&& Q_low.w[0] <
- __bid_reciprocals10_128[extra_digits].w[0])))
+ reciprocals10_128[extra_digits].w[0])))
status = EXACT_STATUS;
break;
default:
// round up
__add_carry_out (Stemp.w[0], CY, Q_low.w[0],
- __bid_reciprocals10_128[extra_digits].w[0]);
+ reciprocals10_128[extra_digits].w[0]);
__add_carry_in_out (Stemp.w[1], carry, Q_low.w[1],
- __bid_reciprocals10_128[extra_digits].w[1], CY);
+ reciprocals10_128[extra_digits].w[1], CY);
if ((remainder_h >> (64 - amount)) + carry >=
(((UINT64) 1) << amount))
status = EXACT_STATUS;
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