| /* |
| * 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. |
| */ |
| |
| __attribute__((overloadable, weak,always_inline)) float |
| step(float edge, float x) |
| { |
| return x < edge ? 0.0F: 1.0F; |
| } |
| |
| __attribute__((overloadable, weak,always_inline)) double |
| step(double edge, double x) |
| { |
| return x < edge ? 0.0: 1.0; |
| } |
| |
| __attribute__((overloadable, weak,always_inline)) float |
| smoothstep(float edge0, float edge1, float x) |
| { |
| float t = clamp((x - edge0) / (edge1 - edge0), 0.0F, 1.0F); |
| return t * t * (3.0F - 2.0F * t); |
| } |
| |
| __attribute__((overloadable, weak,always_inline)) double |
| smoothstep(double edge0, double edge1, double x) |
| { |
| double t = clamp((x - edge0) / (edge1 - edge0), 0.0, 1.0); |
| return t * t * (3.0 - 2.0 * t); |
| } |
| |