126 int32_t lv_cubic_bezier(int32_t x, int32_t x1, int32_t y1, int32_t x2, int32_t y2)  in lv_cubic_bezier()  argument
137     if(x == 0 || x == LV_BEZIER_VAL_MAX) return x;  in lv_cubic_bezier()
142     x <<= CUBIC_PRECISION_BITS - LV_BEZIER_VAL_SHIFT;  in lv_cubic_bezier()
158     t = x; /*Make a guess*/  in lv_cubic_bezier()
161         xs = do_cubic_bezier(t, ax, bx, cx) - x;  in lv_cubic_bezier()
178     tl = 0, tr = 1L << CUBIC_PRECISION_BITS, t = x;  in lv_cubic_bezier()
192         if(LV_ABS(xs - x) <= 1) goto found;  in lv_cubic_bezier()
193         x > xs ? (tl = t) : (tr = t);  in lv_cubic_bezier()
208 void LV_ATTRIBUTE_FAST_MEM lv_sqrt(uint32_t x, lv_sqrt_res_t * q, uint32_t mask)  in lv_sqrt()  argument
210     x = x << 8; /*To get 4 bit precision. (sqrt(256) = 16 = 4 bit)*/  in lv_sqrt()
217         if(trial * trial <= x) root = trial;  in lv_sqrt()
232 int32_t LV_ATTRIBUTE_FAST_MEM lv_sqrt32(uint32_t x)  in lv_sqrt32()  argument
258     if(x >= 0x10000)  in lv_sqrt32()
259         if(x >= 0x1000000)  in lv_sqrt32()
260             if(x >= 0x10000000)  in lv_sqrt32()
261                 if(x >= 0x40000000) {  in lv_sqrt32()
262                     if(x >= 65535UL * 65535UL)  in lv_sqrt32()
264                     xn = sqq_table[x >> 24] << 8;  in lv_sqrt32()
267                     xn = sqq_table[x >> 22] << 7;  in lv_sqrt32()
268             else if(x >= 0x4000000)  in lv_sqrt32()
269                 xn = sqq_table[x >> 20] << 6;  in lv_sqrt32()
271                 xn = sqq_table[x >> 18] << 5;  in lv_sqrt32()
273             if(x >= 0x100000)  in lv_sqrt32()
274                 if(x >= 0x400000)  in lv_sqrt32()
275                     xn = sqq_table[x >> 16] << 4;  in lv_sqrt32()
277                     xn = sqq_table[x >> 14] << 3;  in lv_sqrt32()
278             else if(x >= 0x40000)  in lv_sqrt32()
279                 xn = sqq_table[x >> 12] << 2;  in lv_sqrt32()
281                 xn = sqq_table[x >> 10] << 1;  in lv_sqrt32()
285     else if(x >= 0x100) {  in lv_sqrt32()
286         if(x >= 0x1000)  in lv_sqrt32()
287             if(x >= 0x4000)  in lv_sqrt32()
288                 xn = (sqq_table[x >> 8] >> 0) + 1;  in lv_sqrt32()
290                 xn = (sqq_table[x >> 6] >> 1) + 1;  in lv_sqrt32()
291         else if(x >= 0x400)  in lv_sqrt32()
292             xn = (sqq_table[x >> 4] >> 2) + 1;  in lv_sqrt32()
294             xn = (sqq_table[x >> 2] >> 3) + 1;  in lv_sqrt32()
299         return sqq_table[x] >> 4;  in lv_sqrt32()
303     xn = (xn + 1 + x / xn) / 2;  in lv_sqrt32()
305     xn = (xn + 1 + x / xn) / 2;  in lv_sqrt32()
308     if(xn * xn > (int32_t)x)   /* Correct rounding if necessary */  in lv_sqrt32()
314 uint16_t lv_atan2(int x, int y)  in lv_atan2()  argument
336     if(x < 0) {  in lv_atan2()
338         x = (0 - x);        /*is now +*/  in lv_atan2()
340     ux = x;                /*copy to unsigned var before multiply*/  in lv_atan2()
404 int32_t lv_map(int32_t x, int32_t min_in, int32_t max_in, int32_t min_out, int32_t max_out)  in lv_map()  argument
406     if(max_in >= min_in && x >= max_in) return max_out;  in lv_map()
407     if(max_in >= min_in && x <= min_in) return min_out;  in lv_map()
409     if(max_in <= min_in && x <= max_in) return max_out;  in lv_map()
410     if(max_in <= min_in && x >= min_in) return min_out;  in lv_map()
422     return ((x - min_in) * delta_out) / delta_in + min_out;  in lv_map()
433     uint32_t x = rand_seed;  in lv_rand()  local
434     x ^= x << 13;  in lv_rand()
435     x ^= x >> 17;  in lv_rand()
436     x ^= x << 5;  in lv_rand()
437     rand_seed = x;  in lv_rand()