Embedded Software and Motor Control Libraries for PXR40xx

Function GFLIB_Tan_F16
4.85.5 Re-entrancy
The function is re-entrant.
replaced with GFLIB_TAN_DEFAULT_F32 symbol. The
&pParam parameter is mandatory.
• With preselected default implementation (i.e.
GFLIB_Tan(f32In, &pParam), where the &pParam is
pointer to approximation coefficients. The &pParam
parameter is optional and in case it is not used, the default
GFLIB_TAN_DEFAULT_F32 approximation coefficients
are used.
4.85.6 Code Example
#include "gflib.h"
tFrac32 f32Angle;
tFrac32 f32Output;
void main(void)
{
// input angle = 0.25 => pi/4
f32Angle = FRAC32 (0.25);
}
// output should be 0x7FFFFFFF = 1
f32Output = GFLIB_Tan_F32 (f32Angle, GFLIB_TAN_DEFAULT_F32);
// output should be 0x7FFFFFFF = 1
f32Output = GFLIB_Tan (f32Angle, GFLIB_TAN_DEFAULT_F32, Define F32);
// ##############################################################
// Available only if 32-bit fractional implementation selected
// as default
// ##############################################################
// output should be 0x7FFFFFFF = 1
f32Output = GFLIB_Tan (f32Angle);
4.86 Function GFLIB_Tan_F16
This function implements polynomial approximation of tangent function.
Embedded Software and Motor Control Libraries for PXR40xx, Rev. 1.0
424 Freescale Semiconductor, Inc.