User manual

mikroBasic PRO for dsPIC30/33 and PIC24
MikroElektronika
691
Trigonometry Library
The mikroBasic 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
sub function sinE3(dim angle_deg as word) as 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
dim res as integer
...
res = sinE3(45) ‘ result is 707
Notes Return value range: -1000..1000.
cosE3
Prototype
sub function cosE3(dim angle_deg as word) as 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
dim res as integer
...
res = cosE3(196) ‘ result is -193
Notes Return value range: -1000..1000.