vcffti - initialize the array WSAVE, which is used in both VCFFTF and VCFFTB.
SUBROUTINE VCFFTI(N, WSAVE) COMPLEX WSAVE(*) INTEGER N SUBROUTINE VCFFTI_64(N, WSAVE) COMPLEX WSAVE(*) INTEGER*8 N F95 INTERFACE SUBROUTINE VFFTI(N, WSAVE) COMPLEX, DIMENSION(:) :: WSAVE INTEGER :: N SUBROUTINE VFFTI_64(N, WSAVE) COMPLEX, DIMENSION(:) :: WSAVE INTEGER(8) :: N C INTERFACE #include <sunperf.h> void vcffti(int n, complex *wsave); void vcffti_64(long n, complex *wsave);
Oracle Solaris Studio Performance Library vcffti(3P) NAME vcffti - initialize the array WSAVE, which is used in both VCFFTF and VCFFTB. SYNOPSIS SUBROUTINE VCFFTI(N, WSAVE) COMPLEX WSAVE(*) INTEGER N SUBROUTINE VCFFTI_64(N, WSAVE) COMPLEX WSAVE(*) INTEGER*8 N F95 INTERFACE SUBROUTINE VFFTI(N, WSAVE) COMPLEX, DIMENSION(:) :: WSAVE INTEGER :: N SUBROUTINE VFFTI_64(N, WSAVE) COMPLEX, DIMENSION(:) :: WSAVE INTEGER(8) :: N C INTERFACE #include <sunperf.h> void vcffti(int n, complex *wsave); void vcffti_64(long n, complex *wsave); ARGUMENTS N (input) Length of the sequence to be transformed. N >= 0. WSAVE (input/output) On entry, an array of dimension (2*N + 15) or greater. VCFFTI needs to be called only once to initialize WSAVE before calling VCFFTF and/or VCFFTB if N and WSAVE remain unchanged between these calls. Thus, subsequent transforms or inverse transforms of same size can be obtained faster than the first since they do not require initialization of the workspace. 7 Nov 2015 vcffti(3P)