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#include "shared/math.h"
uint8_t sintable[256] = {
128, 131, 134, 137, 140, 143, 146, 149, 152, 155, 158, 162, 165, 167, 170,
173, 176, 179, 182, 185, 188, 190, 193, 196, 198, 201, 203, 206, 208, 211,
213, 215, 218, 220, 222, 224, 226, 228, 230, 232, 234, 235, 237, 238, 240,
241, 243, 244, 245, 246, 248, 249, 250, 250, 251, 252, 253, 253, 254, 254,
254, 255, 255, 255, 255, 255, 255, 255, 254, 254, 254, 253, 253, 252, 251,
250, 250, 249, 248, 246, 245, 244, 243, 241, 240, 238, 237, 235, 234, 232,
230, 228, 226, 224, 222, 220, 218, 215, 213, 211, 208, 206, 203, 201, 198,
196, 193, 190, 188, 185, 182, 179, 176, 173, 170, 167, 165, 162, 158, 155,
152, 149, 146, 143, 140, 137, 134, 131, 128, 124, 121, 118, 115, 112, 109,
106, 103, 100, 97, 93, 90, 88, 85, 82, 79, 76, 73, 70, 67, 65,
62, 59, 57, 54, 52, 49, 47, 44, 42, 40, 37, 35, 33, 31, 29,
27, 25, 23, 21, 20, 18, 17, 15, 14, 12, 11, 10, 9, 7, 6,
5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 9, 10, 11,
12, 14, 15, 17, 18, 20, 21, 23, 25, 27, 29, 31, 33, 35, 37,
40, 42, 44, 47, 49, 52, 54, 57, 59, 62, 65, 67, 70, 73, 76,
79, 82, 85, 88, 90, 93, 97, 100, 103, 106, 109, 112, 115, 118, 121,
124,
};
uint8_t byte_sin(uint8_t n)
{
return sintable[n];
}
uint8_t amp(uint8_t in, uint8_t n)
{
uint32_t out = in;
for (int i = 0; i < n; ++i) {
out = (out * in) / 256;
}
return min(out, 255);
}
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