| /* |
| * Copyright (c) 2014 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| #include "math64.h" |
| #include "sincosD_piby4.h" |
| #include "remainderD_piby2.h" |
| |
| __attribute__((overloadable, always_inline, pure, weak)) double |
| sin(double x) |
| { |
| double y = fabs(x); |
| |
| double r, rr; |
| int regn; |
| |
| if (y < 0x1.0p+47) |
| remainder_piby2_medium(y, &r, &rr, ®n); |
| else |
| remainder_piby2_large(y, &r, &rr, ®n); |
| |
| double2 sc = sincos_piby4(r, rr); |
| |
| int2 s = as_int2(regn & 1 ? sc.hi : sc.lo); |
| s.hi ^= ((regn > 1) << 31) ^ ((x < 0.0) << 31); |
| |
| return isinf(x) | isnan(x) ? as_double(QNANBITPATT_DP64) : as_double(s); |
| } |
| |
