46  * @return sinus of 'angle'. sin(-90) = -32767, sin(90) = 32767
59         angle = 180 - angle;  in lv_trigo_sin()
63         angle = angle - 180;  in lv_trigo_sin()
64         ret   = -sin0_90_table[angle];  in lv_trigo_sin()
67         angle = 360 - angle;  in lv_trigo_sin()
68         ret   = -sin0_90_table[angle];  in lv_trigo_sin()
85     uint32_t t_rem  = 1024 - t;  in lv_bezier3()
102  * @param q store the result here. q->i: integer part, q->f: fractional part in 1/256 unit
109 void LV_ATTRIBUTE_FAST_MEM lv_sqrt(uint32_t x, lv_sqrt_res_t * q, uint32_t mask)  in lv_sqrt()  argument
122     q->i = root >> 4;  in lv_sqrt()
123     q->f = (root & 0xf) << 4;  in lv_sqrt()
134     // Fast XY vector to integer degree algorithm - Jan 2011 www.RomanBlack.com  in lv_atan2()
136     // within +/- 1 degree of the accurate value without needing  in lv_atan2()
138     // NOTE! at least one of the X or Y values must be non-zero!  in lv_atan2()
140     // the angle in integer degrees from 0-360.  in lv_atan2()
142     // they are between -1456 and 1456 so the 16bit multiply does not overflow.  in lv_atan2()
155         x = (0 - x);        // is now +  in lv_atan2()
160         y = (0 - y);        // is now +  in lv_atan2()
166         degree = (uy * 45) / ux;   // degree result will be 0-45 range  in lv_atan2()
170         degree = (ux * 45) / uy;   // degree result will be 0-45 range  in lv_atan2()
188     degree += comp;   // degree is now accurate to +/- 1 degree!  in lv_atan2()
190     // Invert degree if it was X>Y octant, makes 0-45 into 90-45  in lv_atan2()
191     if(negflag & 0x10) degree = (90 - degree);  in lv_atan2()
193     // 3. Degree is now 0-90 range for this quadrant,  in lv_atan2()
195     if(negflag & 0x02) { // if -Y  in lv_atan2()
196         if(negflag & 0x01)   // if -Y -X  in lv_atan2()
198         else        // else is -Y +X  in lv_atan2()
199             degree = (180 - degree);  in lv_atan2()
202         if(negflag & 0x01)   // if +Y -X  in lv_atan2()
203             degree = (360 - degree);  in lv_atan2()
246      *   ((x - min_in) * delta_out) / delta in) + min_out  in lv_map()
248      *   (x - min_in) * (delta_out / delta_min) + min_out  in lv_map()
251     int32_t delta_in = max_in - min_in;  in lv_map()
252     int32_t delta_out = max_out - min_out;  in lv_map()
254     return ((x - min_in) * delta_out) / delta_in + min_out;  in lv_map()
268     return (a % (max - min + 1)) + min;  in lv_rand()