User manual

742
mikoC PRO for dsPIC
MikroElektronika
Trigonometry Library
The mikroC PRO for dsPIC30/33 and PIC24 implements fundamental trigonometry functions. These functions are
implemented as look-up tables. Trigonometry functions are implemented in integer format in order to save memory.
Library Routines
- sinE3
- cosE3
sinE3
Prototype
int sinE3(unsigned angle_deg);
Description The function calculates sine multiplied by 1000 and rounded to the nearest integer:
result = round(sin(angle_deg)*1000)
Parameters
- angle_deg: input angle in degrees
Returns The function returns the sine of input parameter multiplied by 1000.
Requires Nothing.
Example
int res;
...
res = sinE3(45); // result is 707
Notes Return value range: -1000..1000.