Calculates the single-precision elementwise phase values, in radians, of the supplied complex vector using the specified stride.
SDKs
- iOS 4.0+
- macOS 10.4+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Accelerate
Declaration
void vDSP_zvphas(const DSPSplitParameters
__ASingle-precision complex input vector.
__IAStride for
A.__CSingle-precision real output vector.
__ICStride for
C.__NThe number of elements to process.
Discussion
Finds the phase values, in radians, of complex vector A and store the results in real vector C. The results are between -pi and +pi. The sign of the result is the sign of the second coordinate in the input vector, except that the v function does not necessarily respect the sign of a zero input.
This performs the following operation:
for (n = 0; n < N; ++n)
C[n] = atan2(Im(A[n]), Re(A[n]));