jsaka1259/fixed-point

32-bit fixed-point library

fixed-point

32 bit fixed-point^*1 library

*1: Q format

Env

• Linux: Ubuntu 18.04
• gcc: gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0
• etc.: gnuplot

Feature

Name	Content
float_to_fr32(float real, uint8_t sft)	Convert float to fixed-point
float_to_fr32_pih(uint8_t sft)	Convert (float)M_PI/2 to fixed-point
double_to_fr32(double real, uint8_t sft)	Convert double to fixed-point
double_to_fr32_pih(uint8_t sft)	Convert (double)M_PI/2 to fixed-point
fr32_to_float(int32_t fr32, uint8_t sft)	Convert fixed-point to float
fr32_to_double(int32_t fr32, uint8_t sft)	Convert fixed-point to double
mul_fr32(int32_t a, int32_t b, uint8_t sft)	Multiplication of fixed-point
div_fr32(int32_t a, int32_t b, uint8_t sft)	Division of fixed-point
cos_fr32(int32_t x, uint8_t sft)	Fixed-point cosine function
sin_fr32(int32_t x, uint8_t sft)	Fixed-point sine function

Demo Cos(x)

$ make
$ ./build/fixed-point -t 6 -s 64 24

LICENSE