1
Dependencies: mcp2515 mbed-dev-f303
math_ops.cpp
00001 00002 #include "math_ops.h" 00003 00004 00005 float fmaxf(float x, float y){ 00006 /// Returns maximum of x, y /// 00007 return (((x)>(y))?(x):(y)); 00008 } 00009 00010 float fminf(float x, float y){ 00011 /// Returns minimum of x, y /// 00012 return (((x)<(y))?(x):(y)); 00013 } 00014 00015 float fmaxf3(float x, float y, float z){ 00016 /// Returns maximum of x, y, z /// 00017 return (x > y ? (x > z ? x : z) : (y > z ? y : z)); 00018 } 00019 00020 float fminf3(float x, float y, float z){ 00021 /// Returns minimum of x, y, z /// 00022 return (x < y ? (x < z ? x : z) : (y < z ? y : z)); 00023 } 00024 00025 void limit_norm(float *x, float *y, float limit){ 00026 /// Scales the lenght of vector (x, y) to be <= limit /// 00027 float norm = sqrt(*x * *x + *y * *y); 00028 if(norm > limit){ 00029 *x = *x * limit/norm; 00030 *y = *y * limit/norm; 00031 } 00032 } 00033 00034 00035 int float_to_uint(float x, float x_min, float x_max, int bits){ 00036 /// Converts a float to an unsigned int, given range and number of bits /// 00037 float span = x_max - x_min; 00038 float offset = x_min; 00039 return (int) ((x-offset)*((float)((1<<bits)-1))/span); 00040 } 00041 00042 00043 float uint_to_float(int x_int, float x_min, float x_max, int bits){ 00044 /// converts unsigned int to float, given range and number of bits /// 00045 float span = x_max - x_min; 00046 float offset = x_min; 00047 return ((float)x_int)*span/((float)((1<<bits)-1)) + offset; 00048 }
Generated on Mon Aug 15 2022 03:33:21 by 1.7.2