tsiry-sandratraina.com / rockbox-zig
A modern Music Player Daemon based on Rockbox open source high quality audio player
libadwaita audio rust zig deno mpris rockbox mpd
fork atom
rockbox-zig / apps / plugins / fft / math.h
at master 20 lines 527 B view raw
Michael Sevakis Make fixepoint.c as a shared library (libfixedpoint.a).
95e23def
1#ifndef __MATH_H_ 2#define __MATH_H_ 3 4#include <inttypes.h> 5#include <math.h> 6#include "fixedpoint.h" 7 8#define Q_MUL(a, b, bits) (( (int64_t) (a) * (int64_t) (b) ) >> (bits)) 9#define Q15_MUL(a, b) Q_MUL(a,b,15) 10#define Q16_MUL(a, b) Q_MUL(a,b,16) 11 12#define Q_DIV(a, b, bits) ( (((int64_t) (a)) << (bits)) / (b) ) 13#define Q15_DIV(a, b) Q_DIV(a,b,15) 14#define Q16_DIV(a, b) Q_DIV(a,b,16) 15 16#define float_q(a, bits) (int32_t)( ((float)(a)) *(1<<(bits))) 17#define float_q15(a) float_q(a, 15) 18#define float_q16(a) float_q(a, 16) 19 20#endif