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-rw-r--r--gcc-4.9/libgcc/config/libbid/bid_dpd.c782
1 files changed, 782 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/libbid/bid_dpd.c b/gcc-4.9/libgcc/config/libbid/bid_dpd.c
new file mode 100644
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--- /dev/null
+++ b/gcc-4.9/libgcc/config/libbid/bid_dpd.c
@@ -0,0 +1,782 @@
+/* Copyright (C) 2007-2014 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+#define DECNUMDIGITS 34 // work with up to 34 digits
+
+#include "bid_internal.h"
+#include "bid_b2d.h"
+
+UINT32
+bid_to_bid32 (UINT32 ba) {
+ UINT32 res;
+ UINT32 sign, comb, exp;
+ UINT32 trailing;
+ UINT32 bcoeff;
+
+ sign = (ba & 0x80000000ul);
+ comb = (ba & 0x7ff00000ul) >> 20;
+ trailing = (ba & 0x000ffffful);
+
+ if ((comb & 0x780) == 0x780) {
+ ba &= 0xfff0000ul;
+ return ba;
+ } else {
+ if ((comb & 0x600) == 0x600) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0xff;
+ bcoeff = ((8 + (comb & 1)) << 20) | trailing;
+ } else {
+ exp = (comb >> 3) & 0xff;
+ bcoeff = ((comb & 7) << 20) | trailing;
+ }
+ if (bcoeff >= 10000000)
+ bcoeff = 0;
+ res = very_fast_get_BID32 (sign, exp, bcoeff);
+ }
+ return res;
+}
+
+UINT64
+bid_to_bid64 (UINT64 ba) {
+ UINT64 res;
+ UINT64 sign, comb, exp;
+ UINT64 trailing;
+ UINT64 bcoeff;
+
+ sign = (ba & 0x8000000000000000ull);
+ comb = (ba & 0x7ffc000000000000ull) >> 50;
+ trailing = (ba & 0x0003ffffffffffffull);
+
+ if ((comb & 0x1e00) == 0x1e00) {
+ ba &= 0xfff000000000000ULL;
+ return ba;
+ } else {
+ if ((comb & 0x1800) == 0x1800) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0x3ff;
+ bcoeff = ((8 + (comb & 1)) << 50) | trailing;
+ } else {
+ exp = (comb >> 3) & 0x3ff;
+ bcoeff = ((comb & 7) << 50) | trailing;
+ }
+ if (bcoeff >= 10000000000000000ull)
+ bcoeff = 0ull;
+ res = very_fast_get_BID64 (sign, exp, bcoeff);
+ }
+ return res;
+}
+
+#if DECIMAL_CALL_BY_REFERENCE
+void
+bid_to_dpd32 (UINT32 * pres, UINT32 * pba) {
+ UINT32 ba = *pba;
+#else
+UINT32
+bid_to_dpd32 (UINT32 ba) {
+#endif
+ UINT32 res;
+
+ UINT32 sign, comb, exp, trailing;
+ UINT32 b0, b1, b2;
+ UINT32 bcoeff, dcoeff;
+ UINT32 nanb = 0;
+
+ sign = (ba & 0x80000000);
+ comb = (ba & 0x7ff00000) >> 20;
+ trailing = (ba & 0xfffff);
+
+ // Detect infinity, and return canonical infinity
+ if ((comb & 0x7c0) == 0x780) {
+ res = sign | 0x78000000;
+ BID_RETURN (res);
+ // Detect NaN, and canonicalize trailing
+ } else if ((comb & 0x7c0) == 0x7c0) {
+ if (trailing > 999999)
+ trailing = 0;
+ nanb = ba & 0xfe000000;
+ exp = 0;
+ bcoeff = trailing;
+ } else { // Normal number
+ if ((comb & 0x600) == 0x600) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0xff;
+ bcoeff = ((8 + (comb & 1)) << 20) | trailing;
+ } else {
+ exp = (comb >> 3) & 0xff;
+ bcoeff = ((comb & 7) << 20) | trailing;
+ }
+ // Zero the coefficient if non-canonical (>= 10^7)
+ if (bcoeff >= 10000000)
+ bcoeff = 0;
+ }
+
+ b0 = bcoeff / 1000000;
+ b1 = (bcoeff / 1000) % 1000;
+ b2 = bcoeff % 1000;
+ dcoeff = (b2d[b1] << 10) | b2d[b2];
+
+ if (b0 >= 8) // is b0 8 or 9?
+ res =
+ sign |
+ ((0x600 | ((exp >> 6) << 7) | ((b0 & 1) << 6) | (exp & 0x3f)) <<
+ 20) | dcoeff;
+ else // else b0 is 0..7
+ res =
+ sign | ((((exp >> 6) << 9) | (b0 << 6) | (exp & 0x3f)) << 20) |
+ dcoeff;
+
+ res |= nanb;
+
+ BID_RETURN (res);
+}
+
+#if DECIMAL_CALL_BY_REFERENCE
+void
+bid_to_dpd64 (UINT64 * pres, UINT64 * pba) {
+ UINT64 ba = *pba;
+#else
+UINT64
+bid_to_dpd64 (UINT64 ba) {
+#endif
+ UINT64 res;
+
+ UINT64 sign, comb, exp;
+ UINT64 trailing;
+ UINT32 b0, b1, b2, b3, b4, b5;
+ UINT64 bcoeff;
+ UINT64 dcoeff;
+ UINT32 yhi, ylo;
+ UINT64 nanb = 0;
+
+//printf("arg bid "FMT_LLX16" \n", ba);
+ sign = (ba & 0x8000000000000000ull);
+ comb = (ba & 0x7ffc000000000000ull) >> 50;
+ trailing = (ba & 0x0003ffffffffffffull);
+
+ // Detect infinity, and return canonical infinity
+ if ((comb & 0x1f00) == 0x1e00) {
+ res = sign | 0x7800000000000000ull;
+ BID_RETURN (res);
+ // Detect NaN, and canonicalize trailing
+ } else if ((comb & 0x1e00) == 0x1e00) {
+ if (trailing > 999999999999999ull)
+ trailing = 0;
+ nanb = ba & 0xfe00000000000000ull;
+ exp = 0;
+ bcoeff = trailing;
+ } else { // Normal number
+ if ((comb & 0x1800) == 0x1800) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0x3ff;
+ bcoeff = ((8 + (comb & 1)) << 50) | trailing;
+ } else {
+ exp = (comb >> 3) & 0x3ff;
+ bcoeff = ((comb & 7) << 50) | trailing;
+ }
+
+ // Zero the coefficient if it is non-canonical (>= 10^16)
+ if (bcoeff >= 10000000000000000ull)
+ bcoeff = 0;
+ }
+
+// Floor(2^61 / 10^9)
+#define D61 (2305843009ull)
+
+// Multipy the binary coefficient by ceil(2^64 / 1000), and take the upper
+// 64-bits in order to compute a division by 1000.
+
+#if 1
+ yhi =
+ ((UINT64) D61 *
+ (UINT64) (UINT32) (bcoeff >> (UINT64) 27)) >> (UINT64) 34;
+ ylo = bcoeff - 1000000000ull * yhi;
+ if (ylo >= 1000000000) {
+ ylo = ylo - 1000000000;
+ yhi = yhi + 1;
+ }
+#else
+ yhi = bcoeff / 1000000000ull;
+ ylo = bcoeff % 1000000000ull;
+#endif
+
+ // yhi = ABBBCCC ylo = DDDEEEFFF
+ b5 = ylo % 1000; // b5 = FFF
+ b3 = ylo / 1000000; // b3 = DDD
+ b4 = (ylo / 1000) - (1000 * b3); // b4 = EEE
+ b2 = yhi % 1000; // b2 = CCC
+ b0 = yhi / 1000000; // b0 = A
+ b1 = (yhi / 1000) - (1000 * b0); // b1 = BBB
+
+ dcoeff = b2d[b5] | b2d2[b4] | b2d3[b3] | b2d4[b2] | b2d5[b1];
+
+ if (b0 >= 8) // is b0 8 or 9?
+ res =
+ sign |
+ ((0x1800 | ((exp >> 8) << 9) | ((b0 & 1) << 8) | (exp & 0xff)) <<
+ 50) | dcoeff;
+ else // else b0 is 0..7
+ res =
+ sign | ((((exp >> 8) << 11) | (b0 << 8) | (exp & 0xff)) << 50) |
+ dcoeff;
+
+ res |= nanb;
+
+ BID_RETURN (res);
+}
+
+#if DECIMAL_CALL_BY_REFERENCE
+void
+dpd_to_bid32 (UINT32 * pres, UINT32 * pda) {
+ UINT32 da = *pda;
+#else
+UINT32
+dpd_to_bid32 (UINT32 da) {
+#endif
+ UINT32 in = *(UINT32 *) & da;
+ UINT32 res;
+
+ UINT32 sign, comb, exp;
+ UINT32 trailing;
+ UINT32 d0 = 0, d1, d2;
+ UINT64 bcoeff;
+ UINT32 nanb = 0;
+
+ sign = (in & 0x80000000);
+ comb = (in & 0x7ff00000) >> 20;
+ trailing = (in & 0x000fffff);
+
+ if ((comb & 0x7e0) == 0x780) { // G0..G4 = 1111 -> Inf
+ res = in & 0xf8000000;
+ BID_RETURN (res);
+ } else if ((comb & 0x7c0) == 0x7c0) { // G0..G5 = 11111 -> NaN
+ nanb = in & 0xfe000000;
+ exp = 0;
+ } else { // Normal number
+ if ((comb & 0x600) == 0x600) { // G0..G1 = 11 -> d0 = 8 + G4
+ d0 = ((comb >> 6) & 1) | 8;
+ exp = ((comb & 0x180) >> 1) | (comb & 0x3f);
+ } else {
+ d0 = (comb >> 6) & 0x7;
+ exp = ((comb & 0x600) >> 3) | (comb & 0x3f);
+ }
+ }
+ d1 = d2b2[(trailing >> 10) & 0x3ff];
+ d2 = d2b[(trailing) & 0x3ff];
+
+ bcoeff = d2 + d1 + (1000000 * d0);
+ if (bcoeff < 0x800000) {
+ res = (exp << 23) | bcoeff | sign;
+ } else {
+ res = (exp << 21) | sign | 0x60000000 | (bcoeff & 0x1fffff);
+ }
+
+ res |= nanb;
+
+ BID_RETURN (res);
+}
+
+#if DECIMAL_CALL_BY_REFERENCE
+void
+dpd_to_bid64 (UINT64 * pres, UINT64 * pda) {
+ UINT64 da = *pda;
+#else
+UINT64
+dpd_to_bid64 (UINT64 da) {
+#endif
+ UINT64 in = *(UINT64 *) & da;
+ UINT64 res;
+
+ UINT64 sign, comb, exp;
+ UINT64 trailing;
+ // UINT64 d0, d1, d2, d3, d4, d5;
+
+ UINT64 d1, d2;
+ UINT32 d0, d3, d4, d5;
+ UINT64 bcoeff;
+ UINT64 nanb = 0;
+
+//printf("arg dpd "FMT_LLX16" \n", in);
+ sign = (in & 0x8000000000000000ull);
+ comb = (in & 0x7ffc000000000000ull) >> 50;
+ trailing = (in & 0x0003ffffffffffffull);
+
+ if ((comb & 0x1f00) == 0x1e00) { // G0..G4 = 1111 -> Inf
+ res = in & 0xf800000000000000ull;
+ BID_RETURN (res);
+ } else if ((comb & 0x1f00) == 0x1f00) { // G0..G5 = 11111 -> NaN
+ nanb = in & 0xfe00000000000000ull;
+ exp = 0;
+ d0 = 0;
+ } else { // Normal number
+ if ((comb & 0x1800) == 0x1800) { // G0..G1 = 11 -> d0 = 8 + G4
+ d0 = ((comb >> 8) & 1) | 8;
+ // d0 = (comb & 0x0100 ? 9 : 8);
+ exp = (comb & 0x600) >> 1;
+ // exp = (comb & 0x0400 ? 1 : 0) * 0x200 + (comb & 0x0200 ? 1 : 0) * 0x100; // exp leading bits are G2..G3
+ } else {
+ d0 = (comb >> 8) & 0x7;
+ exp = (comb & 0x1800) >> 3;
+ // exp = (comb & 0x1000 ? 1 : 0) * 0x200 + (comb & 0x0800 ? 1 : 0) * 0x100; // exp loading bits are G0..G1
+ }
+ }
+ d1 = d2b5[(trailing >> 40) & 0x3ff];
+ d2 = d2b4[(trailing >> 30) & 0x3ff];
+ d3 = d2b3[(trailing >> 20) & 0x3ff];
+ d4 = d2b2[(trailing >> 10) & 0x3ff];
+ d5 = d2b[(trailing) & 0x3ff];
+
+ bcoeff = (d5 + d4 + d3) + d2 + d1 + (1000000000000000ull * d0);
+ exp += (comb & 0xff);
+ res = very_fast_get_BID64 (sign, exp, bcoeff);
+
+ res |= nanb;
+
+ BID_RETURN (res);
+}
+
+#if DECIMAL_CALL_BY_REFERENCE
+void
+bid_to_dpd128 (UINT128 * pres, UINT128 * pba) {
+ UINT128 ba = *pba;
+#else
+UINT128
+bid_to_dpd128 (UINT128 ba) {
+#endif
+ UINT128 res;
+
+ UINT128 sign;
+ UINT32 comb, exp;
+ UINT128 trailing;
+ UINT128 d0, d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11;
+ UINT128 bcoeff;
+ UINT128 dcoeff;
+ UINT64 nanb = 0;
+
+ sign.w[1] = (ba.w[HIGH_128W] & 0x8000000000000000ull);
+ sign.w[0] = 0;
+ comb = (ba.w[HIGH_128W] & 0x7fffc00000000000ull) >> 46;
+ trailing.w[1] = (ba.w[HIGH_128W] & 0x00003fffffffffffull);
+ trailing.w[0] = ba.w[LOW_128W];
+ exp = 0;
+
+ if ((comb & 0x1f000) == 0x1e000) { // G0..G4 = 1111 -> Inf
+ res.w[HIGH_128W] = ba.w[HIGH_128W] & 0xf800000000000000ull;
+ res.w[LOW_128W] = 0;
+ BID_RETURN (res);
+ // Detect NaN, and canonicalize trailing
+ } else if ((comb & 0x1f000) == 0x1f000) {
+ if ((trailing.w[1] > 0x0000314dc6448d93ULL) || // significand is non-canonical
+ ((trailing.w[1] == 0x0000314dc6448d93ULL)
+ && (trailing.w[0] >= 0x38c15b0a00000000ULL))
+ // significand is non-canonical
+ ) {
+ trailing.w[1] = trailing.w[0] = 0ull;
+ }
+ bcoeff.w[1] = trailing.w[1];
+ bcoeff.w[0] = trailing.w[0];
+ nanb = ba.w[HIGH_128W] & 0xfe00000000000000ull;
+ exp = 0;
+ } else { // Normal number
+ if ((comb & 0x18000) == 0x18000) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0x3fff;
+ bcoeff.w[1] =
+ ((UINT64) (8 + (comb & 1)) << (UINT64) 46) | trailing.w[1];
+ bcoeff.w[0] = trailing.w[0];
+ } else {
+ exp = (comb >> 3) & 0x3fff;
+ bcoeff.w[1] =
+ ((UINT64) (comb & 7) << (UINT64) 46) | trailing.w[1];
+ bcoeff.w[0] = trailing.w[0];
+ }
+ // Zero the coefficient if non-canonical (>= 10^34)
+ if (bcoeff.w[1] > 0x1ed09bead87c0ull ||
+ (bcoeff.w[1] == 0x1ed09bead87c0ull
+ && bcoeff.w[0] >= 0x378D8E6400000000ull)) {
+ bcoeff.w[0] = bcoeff.w[1] = 0;
+ }
+ }
+ // Constant 2^128 / 1000 + 1
+ {
+ UINT128 t;
+ UINT64 t2;
+ UINT128 d1000;
+ UINT128 b11, b10, b9, b8, b7, b6, b5, b4, b3, b2, b1;
+ d1000.w[1] = 0x4189374BC6A7EFull;
+ d1000.w[0] = 0x9DB22D0E56041894ull;
+ __mul_128x128_high (b11, bcoeff, d1000);
+ __mul_128x128_high (b10, b11, d1000);
+ __mul_128x128_high (b9, b10, d1000);
+ __mul_128x128_high (b8, b9, d1000);
+ __mul_128x128_high (b7, b8, d1000);
+ __mul_128x128_high (b6, b7, d1000);
+ __mul_128x128_high (b5, b6, d1000);
+ __mul_128x128_high (b4, b5, d1000);
+ __mul_128x128_high (b3, b4, d1000);
+ __mul_128x128_high (b2, b3, d1000);
+ __mul_128x128_high (b1, b2, d1000);
+
+
+ __mul_64x128_full (t2, t, 1000ull, b11);
+ __sub_128_128 (d11, bcoeff, t);
+ __mul_64x128_full (t2, t, 1000ull, b10);
+ __sub_128_128 (d10, b11, t);
+ __mul_64x128_full (t2, t, 1000ull, b9);
+ __sub_128_128 (d9, b10, t);
+ __mul_64x128_full (t2, t, 1000ull, b8);
+ __sub_128_128 (d8, b9, t);
+ __mul_64x128_full (t2, t, 1000ull, b7);
+ __sub_128_128 (d7, b8, t);
+ __mul_64x128_full (t2, t, 1000ull, b6);
+ __sub_128_128 (d6, b7, t);
+ __mul_64x128_full (t2, t, 1000ull, b5);
+ __sub_128_128 (d5, b6, t);
+ __mul_64x128_full (t2, t, 1000ull, b4);
+ __sub_128_128 (d4, b5, t);
+ __mul_64x128_full (t2, t, 1000ull, b3);
+ __sub_128_128 (d3, b4, t);
+ __mul_64x128_full (t2, t, 1000ull, b2);
+ __sub_128_128 (d2, b3, t);
+ __mul_64x128_full (t2, t, 1000ull, b1);
+ __sub_128_128 (d1, b2, t);
+ d0 = b1;
+
+ }
+
+ dcoeff.w[0] = b2d[d11.w[0]] | (b2d[d10.w[0]] << 10) |
+ (b2d[d9.w[0]] << 20) | (b2d[d8.w[0]] << 30) | (b2d[d7.w[0]] << 40) |
+ (b2d[d6.w[0]] << 50) | (b2d[d5.w[0]] << 60);
+ dcoeff.w[1] =
+ (b2d[d5.w[0]] >> 4) | (b2d[d4.w[0]] << 6) | (b2d[d3.w[0]] << 16) |
+ (b2d[d2.w[0]] << 26) | (b2d[d1.w[0]] << 36);
+
+ res.w[0] = dcoeff.w[0];
+ if (d0.w[0] >= 8) {
+ res.w[1] =
+ sign.
+ w[1] |
+ ((0x18000 | ((exp >> 12) << 13) | ((d0.w[0] & 1) << 12) |
+ (exp & 0xfff)) << 46) | dcoeff.w[1];
+ } else {
+ res.w[1] =
+ sign.
+ w[1] | ((((exp >> 12) << 15) | (d0.w[0] << 12) | (exp & 0xfff))
+ << 46) | dcoeff.w[1];
+ }
+
+ res.w[1] |= nanb;
+
+ BID_SWAP128 (res);
+ BID_RETURN (res);
+}
+
+#if DECIMAL_CALL_BY_REFERENCE
+void
+dpd_to_bid128 (UINT128 * pres, UINT128 * pda) {
+ UINT128 da = *pda;
+#else
+UINT128
+dpd_to_bid128 (UINT128 da) {
+#endif
+ UINT128 in = *(UINT128 *) & da;
+ UINT128 res;
+
+ UINT128 sign;
+ UINT64 exp, comb;
+ UINT128 trailing;
+ UINT64 d0, d1, d2, d3, d4, d5, d6, d7, d8, d9, d10, d11;
+ UINT128 bcoeff;
+ UINT64 tl, th;
+ UINT64 nanb = 0;
+
+ sign.w[1] = (in.w[HIGH_128W] & 0x8000000000000000ull);
+ sign.w[0] = 0;
+ comb = (in.w[HIGH_128W] & 0x7fffc00000000000ull) >> 46;
+ trailing.w[1] = (in.w[HIGH_128W] & 0x00003fffffffffffull);
+ trailing.w[0] = in.w[LOW_128W];
+ exp = 0;
+
+ if ((comb & 0x1f000) == 0x1e000) { // G0..G4 = 1111 -> Inf
+ res.w[HIGH_128W] = in.w[HIGH_128W] & 0xf800000000000000ull;
+ res.w[LOW_128W] = 0ull;
+ BID_RETURN (res);
+ } else if ((comb & 0x1f000) == 0x1f000) { // G0..G4 = 11111 -> NaN
+ nanb = in.w[HIGH_128W] & 0xfe00000000000000ull;
+ exp = 0;
+ d0 = 0;
+ } else { // Normal number
+ if ((comb & 0x18000) == 0x18000) { // G0..G1 = 11 -> d0 = 8 + G4
+ d0 = 8 + (comb & 0x01000 ? 1 : 0);
+ exp =
+ (comb & 0x04000 ? 1 : 0) * 0x2000 +
+ (comb & 0x02000 ? 1 : 0) * 0x1000;
+ // exp leading bits are G2..G3
+ } else {
+ d0 =
+ 4 * (comb & 0x04000 ? 1 : 0) + 2 * (comb & 0x2000 ? 1 : 0) +
+ (comb & 0x1000 ? 1 : 0);
+ exp =
+ (comb & 0x10000 ? 1 : 0) * 0x2000 +
+ (comb & 0x08000 ? 1 : 0) * 0x1000;
+ // exp loading bits are G0..G1
+ }
+ }
+
+ d11 = d2b[(trailing.w[0]) & 0x3ff];
+ d10 = d2b[(trailing.w[0] >> 10) & 0x3ff];
+ d9 = d2b[(trailing.w[0] >> 20) & 0x3ff];
+ d8 = d2b[(trailing.w[0] >> 30) & 0x3ff];
+ d7 = d2b[(trailing.w[0] >> 40) & 0x3ff];
+ d6 = d2b[(trailing.w[0] >> 50) & 0x3ff];
+ d5 = d2b[(trailing.w[0] >> 60) | ((trailing.w[1] & 0x3f) << 4)];
+ d4 = d2b[(trailing.w[1] >> 6) & 0x3ff];
+ d3 = d2b[(trailing.w[1] >> 16) & 0x3ff];
+ d2 = d2b[(trailing.w[1] >> 26) & 0x3ff];
+ d1 = d2b[(trailing.w[1] >> 36) & 0x3ff];
+
+ tl =
+ d11 + (d10 * 1000ull) + (d9 * 1000000ull) + (d8 * 1000000000ull) +
+ (d7 * 1000000000000ull) + (d6 * 1000000000000000ull);
+ th =
+ d5 + (d4 * 1000ull) + (d3 * 1000000ull) + (d2 * 1000000000ull) +
+ (d1 * 1000000000000ull) + (d0 * 1000000000000000ull);
+ __mul_64x64_to_128 (bcoeff, th, 1000000000000000000ull);
+ __add_128_64 (bcoeff, bcoeff, tl);
+
+ if (!nanb)
+ exp += (comb & 0xfff);
+
+ res.w[0] = bcoeff.w[0];
+ res.w[1] = (exp << 49) | sign.w[1] | bcoeff.w[1];
+
+ res.w[1] |= nanb;
+
+ BID_SWAP128 (res);
+ BID_RETURN (res);
+}
+
+UINT128
+bid_to_bid128 (UINT128 bq) {
+ UINT128 res;
+ UINT64 sign, comb, exp;
+ UINT64 trailing;
+ UINT64 bcoeff;
+
+ UINT128 rq;
+ UINT128 qcoeff;
+ UINT64 ba, bb;
+
+ ba = *((UINT64 *) & bq + HIGH_128W);
+ bb = *((UINT64 *) & bq + LOW_128W);
+
+ sign = (ba & 0x8000000000000000ull);
+ comb = (ba & 0x7fffc00000000000ull) >> 46;
+ trailing = (ba & 0x00003fffffffffffull);
+
+ if ((comb & 0x18000) == 0x18000) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0x3fff;
+ bcoeff = ((8 + (comb & 1)) << 46) | trailing;
+ } else {
+ exp = (comb >> 3) & 0x3fff;
+ bcoeff = ((comb & 7) << 46) | trailing;
+ }
+
+ if ((comb & 0x1f000) == 0x1f000) { //NaN
+ ba &= 0xfe003fffffffffffULL; // make exponent 0
+ bcoeff &= 0x00003fffffffffffull; // NaN payloat is only T.
+ if ((bcoeff > 0x0000314dc6448d93ULL) || // significand is non-canonical
+ ((bcoeff == 0x0000314dc6448d93ULL)
+ && (bb >= 0x38c15b0a00000000ULL))
+ // significand is non-canonical
+ ) {
+ bcoeff = 0ull;
+ ba &= ~0x00003fffffffffffull;
+ bb = 0ull;
+ }
+ *((UINT64 *) & rq + HIGH_128W) = ba;
+ *((UINT64 *) & rq + LOW_128W) = bb;
+ return rq;
+ } else if ((comb & 0x1e000) == 0x1e000) { //Inf
+ ba &= 0xf800000000000000ULL; // make exponent and significand 0
+ bb = 0;
+ *((UINT64 *) & rq + HIGH_128W) = ba;
+ *((UINT64 *) & rq + LOW_128W) = bb;
+ return rq;
+ }
+
+ if ((bcoeff > 0x0001ed09bead87c0ull)
+ || ((bcoeff == 0x0001ed09bead87c0ull)
+ && (bb > 0x378d8e63ffffffffull))) {
+ // significand is non-canonical
+ bcoeff = 0ull;
+ bb = 0ull;
+ }
+
+ *((UINT64 *) & qcoeff + 1) = bcoeff;
+ *((UINT64 *) & qcoeff + 0) = bb;
+
+ get_BID128_fast (&res, sign, exp, qcoeff);
+
+ BID_SWAP128 (res);
+ return res;
+}
+
+UINT32
+bid32_canonize (UINT32 ba) {
+ FPSC bidrnd;
+ unsigned int rnd = 0;
+
+ UINT32 res;
+ UINT32 sign, comb, exp;
+ UINT32 trailing;
+ UINT32 bcoeff;
+
+ sign = (ba & 0x80000000);
+ comb = (ba & 0x7ff00000) >> 20;
+ trailing = (ba & 0x000fffff);
+
+ if ((comb & 0x600) == 0x600) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0xff;
+ bcoeff = ((8 + (comb & 1)) << 20) | trailing;
+ } else {
+ exp = (comb >> 3) & 0xff;
+ bcoeff = ((comb & 7) << 20) | trailing;
+ }
+
+ if ((comb & 0x7c0) == 0x7c0) { //NaN
+ ba &= 0xfe0fffff; // make exponent 0
+ bcoeff &= 0x000fffff; // NaN payloat is only T.
+ if (bcoeff >= 1000000)
+ ba &= 0xfff00000; //treat non-canonical significand
+ return ba;
+ } else if ((comb & 0x780) == 0x780) { //Inf
+ ba &= 0xf8000000; // make exponent and significand 0
+ return ba;
+ }
+
+ if (bcoeff >= 10000000)
+ bcoeff = 0;
+ rnd = bidrnd = ROUNDING_TO_NEAREST;
+ res = get_BID32 (sign, exp, bcoeff, rnd, &bidrnd);
+ return res;
+}
+
+UINT64
+bid64_canonize (UINT64 ba) {
+ UINT64 res;
+ UINT64 sign, comb, exp;
+ UINT64 trailing;
+ UINT64 bcoeff;
+
+ sign = (ba & 0x8000000000000000ull);
+ comb = (ba & 0x7ffc000000000000ull) >> 50;
+ trailing = (ba & 0x0003ffffffffffffull);
+
+
+ if ((comb & 0x1800) == 0x1800) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0x3ff;
+ bcoeff = ((8 + (comb & 1)) << 50) | trailing;
+ } else {
+ exp = (comb >> 3) & 0x3ff;
+ bcoeff = ((comb & 7) << 50) | trailing;
+ }
+
+ if ((comb & 0x1f00) == 0x1f00) { //NaN
+ ba &= 0xfe03ffffffffffffULL; // make exponent 0
+ bcoeff &= 0x0003ffffffffffffull; // NaN payloat is only T.
+ if (bcoeff >= 1000000000000000ull)
+ ba &= 0xfe00000000000000ull; // treat non canonical significand and zero G6-G12
+ return ba;
+ } else if ((comb & 0x1e00) == 0x1e00) { //Inf
+ ba &= 0xf800000000000000ULL; // make exponent and significand 0
+ return ba;
+ }
+
+ if (bcoeff >= 10000000000000000ull) {
+ bcoeff = 0ull;
+ }
+ res = very_fast_get_BID64 (sign, exp, bcoeff);
+ return res;
+}
+
+UINT128
+bid128_canonize (UINT128 bq) {
+ UINT128 res;
+ UINT64 sign, comb, exp;
+ UINT64 trailing;
+ UINT64 bcoeff;
+
+ UINT128 rq;
+ UINT128 qcoeff;
+ UINT64 ba, bb;
+
+ ba = *((UINT64 *) & bq + HIGH_128W);
+ bb = *((UINT64 *) & bq + LOW_128W);
+
+ sign = (ba & 0x8000000000000000ull);
+ comb = (ba & 0x7fffc00000000000ull) >> 46;
+ trailing = (ba & 0x00003fffffffffffull);
+
+ if ((comb & 0x18000) == 0x18000) { // G0..G1 = 11 -> exp is G2..G11
+ exp = (comb >> 1) & 0x3fff;
+ bcoeff = ((8 + (comb & 1)) << 46) | trailing;
+ } else {
+ exp = (comb >> 3) & 0x3fff;
+ bcoeff = ((comb & 7) << 46) | trailing;
+ }
+
+ if ((comb & 0x1f000) == 0x1f000) { //NaN
+ ba &= 0xfe003fffffffffffULL; // make exponent 0
+ bcoeff &= 0x00003fffffffffffull; // NaN payload is only T.
+
+ if ((bcoeff > 0x0000314dc6448d93ULL) || // significand is non-canonical
+ ((bcoeff == 0x0000314dc6448d93ULL)
+ && (bb >= 0x38c15b0a00000000ULL))
+ // significand is non-canonical
+ ) {
+ bcoeff = 0ull;
+ ba &= ~0x00003fffffffffffull;
+ bb = 0ull;
+ }
+ *((UINT64 *) & rq + HIGH_128W) = ba;
+ *((UINT64 *) & rq + LOW_128W) = bb;
+ return rq;
+ } else if ((comb & 0x1e000) == 0x1e000) { //Inf
+ ba &= 0xf800000000000000ULL; // make exponent and significand 0
+ bb = 0;
+ *((UINT64 *) & rq + HIGH_128W) = ba;
+ *((UINT64 *) & rq + LOW_128W) = bb;
+ return rq;
+ }
+
+ if ((bcoeff > 0x0001ed09bead87c0ull) || // significand is non-canonical
+ ((bcoeff == 0x0001ed09bead87c0ull)
+ && (bb > 0x378d8e63ffffffffull))
+ // significand is non-canonical
+ ) {
+ bcoeff = 0ull;
+ bb = 0ull;
+ }
+
+ *((UINT64 *) & qcoeff + 1) = bcoeff;
+ *((UINT64 *) & qcoeff + 0) = bb;
+
+ get_BID128_fast (&res, sign, exp, qcoeff);
+ BID_SWAP128 (res);
+ return res;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 06:19:23 +0000