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Math ​

Functions ​

int32_t sin_lookup(int32_t angle)

Look-up the sine of the given angle from a pre-computed table.

Parameters ​
  • angle: The angle for which to compute the cosine. The angle value is scaled linearly, such that a value of 0x10000 corresponds to 360 degrees or 2 PI radians.

int32_t cos_lookup(int32_t angle)

Look-up the cosine of the given angle from a pre-computed table. This is equivalent to calling sin_lookup(angle + TRIG_MAX_ANGLE / 4).

Parameters ​
  • angle: The angle for which to compute the cosine. The angle value is scaled linearly, such that a value of 0x10000 corresponds to 360 degrees or 2 PI radians.

int32_t atan2_lookup(int16_t y, int16_t x)

Look-up the arctangent of a given x, y pair The angle value is scaled linearly, such that a value of 0x10000 corresponds to 360 degrees or 2 PI radians.