dcosqi - initialize the array WSAVE, which is used in both COSQF and COSQB.
SUBROUTINE DCOSQI(N, WSAVE) INTEGER N DOUBLE PRECISION WSAVE(*) SUBROUTINE DCOSQI_64(N, WSAVE) INTEGER*8 N DOUBLE PRECISION WSAVE(*) F95 INTERFACE SUBROUTINE COSQI(N, WSAVE) INTEGER :: N REAL(8), DIMENSION(:) :: WSAVE SUBROUTINE COSQI_64(N, WSAVE) INTEGER(8) :: N REAL(8), DIMENSION(:) :: WSAVE C INTERFACE #include <sunperf.h> void dcosqi(int n, double *wsave); void dcosqi_64(long n, double *wsave);
Oracle Solaris Studio Performance Library dcosqi(3P) NAME dcosqi - initialize the array WSAVE, which is used in both COSQF and COSQB. SYNOPSIS SUBROUTINE DCOSQI(N, WSAVE) INTEGER N DOUBLE PRECISION WSAVE(*) SUBROUTINE DCOSQI_64(N, WSAVE) INTEGER*8 N DOUBLE PRECISION WSAVE(*) F95 INTERFACE SUBROUTINE COSQI(N, WSAVE) INTEGER :: N REAL(8), DIMENSION(:) :: WSAVE SUBROUTINE COSQI_64(N, WSAVE) INTEGER(8) :: N REAL(8), DIMENSION(:) :: WSAVE C INTERFACE #include <sunperf.h> void dcosqi(int n, double *wsave); void dcosqi_64(long n, double *wsave); ARGUMENTS N (input) Length of the sequence to be transformed. The method is most efficient when N is a product of small primes. WSAVE (input/output) On entry, an array of dimension (3 * N + 15) or greater. DCOSQI needs to be called only once to initialize WSAVE before calling DCOSQF and/or DCOSQB 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 dcosqi(3P)