Embedded Software and Motor Control Libraries for PXR40xx

Function MLIB_MulSat_F16
void main(void)
{
// first input = 0.8
f16In1 = FRAC16 (0.8);
}
// second input = 0.75
f16In2 = FRAC16 (0.75);
// output should be 0x4ccc = FRAC16(0.6)
f16Out = MLIB_MulSat_F16(f16In1,f16In2);
// output should be 0x4ccc = FRAC16(0.6)
f16Out = MLIB_MulSat (f16In1,f16In2,Define F16);
// ##############################################################
// Available only if 16-bit fractional implementation selected
// as default
// ##############################################################
// output should be 0x4ccc = FRAC32(0.6)
f16Out = MLIB_MulSat (f16In1,f16In2);
The output of the function is defined by the following simple equation:
Equation MLIB_MulSat_Eq1
Note
Overflow is detected. The functions saturates the return value if
it cannot fit into the return type.
4.155.7 Re-entrancy
The function is re-entrant.
4.155.8 Code Example
#include "mlib.h"
tFrac16 f16In1;
tFrac16 f16In2;
tFrac16 f16Out;
void main(void)
{
// first input = 0.8
f16In1 = FRAC16 (0.8);
// second input = 0.75
Embedded Software and Motor Control Libraries for PXR40xx, Rev. 1.0
630 Freescale Semiconductor, Inc.