// fastmath.cpp - generated tables for fastmath.h. // // kSinTable: quarter-wave sine, Q15. 257 entries (the extra one lets the // interpolator read idx+1 unconditionally). Generated as: // round(32767 * sin((i/256) * (pi/2))) for i in 0..256 #include "fastmath.h" #include "pico.h" // __not_in_flash namespace bio { // In RAM: read on every fast_sin() call from the 48kHz path, where an XIP // miss costs ~100 cycles. const int16_t __not_in_flash("sintab") kSinTable[257] = { 0, 201, 402, 603, 804, 1005, 1206, 1407, 1608, 1809, 2009, 2210, 2410, 2611, 2811, 3012, 3212, 3412, 3612, 3811, 4011, 4210, 4410, 4609, 4808, 5007, 5205, 5404, 5602, 5800, 5998, 6195, 6393, 6590, 6786, 6983, 7179, 7375, 7571, 7767, 7962, 8157, 8351, 8545, 8739, 8933, 9126, 9319, 9512, 9704, 9896, 10087, 10278, 10469, 10659, 10849, 11039, 11228, 11417, 11605, 11793, 11980, 12167, 12353, 12539, 12725, 12910, 13094, 13279, 13462, 13645, 13828, 14010, 14191, 14372, 14553, 14732, 14912, 15090, 15269, 15446, 15623, 15800, 15976, 16151, 16325, 16499, 16673, 16846, 17018, 17189, 17360, 17530, 17700, 17869, 18037, 18204, 18371, 18537, 18703, 18868, 19032, 19195, 19357, 19519, 19680, 19841, 20000, 20159, 20317, 20475, 20631, 20787, 20942, 21096, 21250, 21403, 21554, 21705, 21856, 22005, 22154, 22301, 22448, 22594, 22739, 22884, 23027, 23170, 23311, 23452, 23592, 23731, 23870, 24007, 24143, 24279, 24413, 24547, 24680, 24811, 24942, 25072, 25201, 25329, 25456, 25582, 25708, 25832, 25955, 26077, 26198, 26319, 26438, 26556, 26674, 26790, 26905, 27019, 27133, 27245, 27356, 27466, 27575, 27683, 27790, 27896, 28001, 28105, 28208, 28310, 28411, 28510, 28609, 28706, 28803, 28898, 28992, 29085, 29177, 29268, 29358, 29447, 29534, 29621, 29706, 29791, 29874, 29956, 30037, 30117, 30195, 30273, 30349, 30424, 30498, 30571, 30643, 30714, 30783, 30852, 30919, 30985, 31050, 31113, 31176, 31237, 31297, 31356, 31414, 31470, 31526, 31580, 31633, 31685, 31736, 31785, 31833, 31880, 31926, 31971, 32014, 32057, 32098, 32137, 32176, 32213, 32250, 32285, 32318, 32351, 32382, 32412, 32441, 32469, 32495, 32521, 32545, 32567, 32589, 32609, 32628, 32646, 32663, 32678, 32692, 32705, 32717, 32728, 32737, 32745, 32752, 32757, 32761, 32765, 32766, 32767, }; } // namespace bio