| /* |
| * 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" |
| |
| __attribute__((overloadable, always_inline)) float |
| nextafter(float x, float y) |
| { |
| int ix = as_int(x); |
| int ax = ix & 0x7fffffff; |
| int mx = 0x80000000 - ix; |
| mx = ix < 0 ? mx : ix; |
| int iy = as_int(y); |
| int ay = iy & 0x7fffffff; |
| int my = 0x80000000 - iy; |
| my = iy < 0 ? my : iy; |
| int t = mx + (mx < my ? 1 : -1); |
| int r = 0x80000000 - t; |
| r = t < 0 ? r : t; |
| r = ax > 0x7f800000 ? ix : r; |
| r = ay > 0x7f800000 ? iy : r; |
| r = (ax|ay) == 0 | ix == iy ? iy : r; |
| return as_float(r); |
| } |