Finds the index of the vector element whose real part has maximum absolute value.
Given a complex vector cx, the i?max1 functions return the index of the first vector element of maximum absolute value. These functions are based on the BLAS functions icamax/izamax, but using the absolute value of components. They are designed for use with clacon/zlacon.
INTEGER. Specifies the number of elements in the vector cx.
COMPLEX for icmax1
DOUBLE COMPLEX for izmax1
Array, size at least
Contains the input vector.
INTEGER. Specifies the spacing between successive elements of cx.