User manual

mikroPascal PRO for dsPIC30/33 and PIC24
MikroElektronika
690
Trigonometry Library
The mikroPascal 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
function sinE3(angle_deg : word): integer;
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
var res : integer;
...
res := sinE3(45); // result is 707
Notes Return value range: -1000..1000.
cosE3
Prototype
function cosE3(angle_deg : word): integer;
Description The function calculates cosine multiplied by 1000 and rounded to the nearest integer:
result = round(cos(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
var res: integer;
...
res := cosE3(196); // result is -193
Notes Return value range: -1000..1000.