

#include <nitro/fx/fx_trig.h>
u16 FX_Atan2Idx( fx32 y, fx32 x );
| y | fx32-format fixed-point decimal. |
| x | fx32-format fixed-point decimal. |
Arctangent of y/x
This finds the arctangent of y/x. The results are returned in a u16 format. The units of the result are equal to 1/65536 of a circle (2 π radians). (Example: A right angle would be 16384.) Internally, a table is referenced.
The divider is used internally. Refer to Divider Usage Notes when using this function inside an interrupt.
FX_Atan, FX_Atan2, FX_AtanIdx, FX_AsinIdx, FX_AcosIdx
2004/06/16 Initial version.
CONFIDENTIAL