/* Common definitions. Copyright 2011 David Robillard Copyright 2002 Mike Rawes This 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 of the License, or (at your option) any later version. This software 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. You should have received a copy of the GNU General Public License along with this software. If not, see . */ #ifndef blip_common_h #define blip_common_h #include "math_func.h" /* Handy constants and macros */ #ifndef SMALLEST_FLOAT /** Smallest generated non-zero float, used for pre-empting denormals */ #define SMALLEST_FLOAT (1.0 / (float)0xFFFFFFFF) #endif /* * Clip without branch (from http://musicdsp.org) */ static inline float f_min (float x, float a) { return a - (a - x + FABSF (a - x)) * 0.5f; } static inline float f_max (float x, float b) { return (x - b + FABSF (x - b)) * 0.5f + b; } static inline float f_clip (float x, float a, float b) { return 0.5f * (FABSF (x - a) + a + b - FABSF (x - b)); } #endif /* blip_common_h */