| /* |
| * 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 "math32.h" |
| #include "remainderF_piby2.h" |
| #include "tanF_piby4.h" |
| |
| __attribute__((overloadable)) float |
| tan(float x) |
| { |
| int ix = as_int(x); |
| int ax = ix & 0x7fffffff; |
| float dx = as_float(ax); |
| |
| float r0, r1; |
| int regn = argReductionS(&r0, &r1, dx); |
| |
| float t = tanf_piby4_new(r0 + r1, regn); |
| t = as_float(as_int(t) ^ (ix ^ ax)); |
| |
| t = ax >= PINFBITPATT_SP32 ? as_float(QNANBITPATT_SP32) : t; |
| //Take care of subnormals |
| t = (x == 0.) ? x : t; |
| return t; |
| } |
| |