Mikroelektronika MIKROE-724 データシート

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)