1.4.2.7 DSP_ComplexSub32 Function
Calculates the difference of two complex numbers.
Description
void DSP_ComplexSub32(int32c *indata1, int32c *indata2, int32c *Output);
Calculates the difference of two complex numbers, indata1 less indata2, and stores the complex result in Output. Both numbers must be in a complex data structure, which includes real and imaginary components. The function saturates the output values if maximum or minimum are exceeded. Real and imaginary components are in the Q31 fractional data format. (a + bi) - (c + di) => (a - c) + (b - d)i
Preconditions
Complex numbers must be in the int32c format.
Parameters
indata1 pointer to input complex number (int32c)
indata2 pointer to input complex number (int32c)
Returns
pointer to result complex numbers (int32c)
None.
Remarks
None.
Example
int32c *res, result; int32c *input1, *input2; int32c test_complex_1 = {0x40000000,0x0CCCCCCC}; _// (0.5 + 0.1i)_ int32c test_complex_2 = {0x73333333,0xB3333334}; _// (0.9 - 0.6i)_ res=&result; input1=&test_complex_1; input2=&test_complex_2; DSP_ComplexSub32(input1, input2, res); _// result = {0xCCCCCCCD, 0x59999998} = (-0.4 + 0.7i)_
C
void DSP_ComplexSub32 (int32c * indata1 , int32c * indata2 , int32c * Output );