dsinqb - synthesize a Fourier sequence from its representation in terms of a sine series with odd wave numbers. The SINQ operations are unnor- malized inverses of themselves, so a call to SINQF followed by a call to SINQB will multiply the input sequence by 4 * N.
SUBROUTINE DSINQB(N, X, WSAVE) INTEGER N DOUBLE PRECISION X(*), WSAVE(*) SUBROUTINE DSINQB_64(N, X, WSAVE) INTEGER*8 N DOUBLE PRECISION X(*), WSAVE(*) F95 INTERFACE SUBROUTINE SINQB(N, X, WSAVE) INTEGER :: N REAL(8), DIMENSION(:) :: X, WSAVE SUBROUTINE SINQB_64(N, X, WSAVE) INTEGER(8) :: N REAL(8), DIMENSION(:) :: X, WSAVE C INTERFACE #include <sunperf.h> void dsinqb(int n, double *x, double *wsave); void dsinqb_64(long n, double *x, double *wsave);
Oracle Solaris Studio Performance Library dsinqb(3P) NAME dsinqb - synthesize a Fourier sequence from its representation in terms of a sine series with odd wave numbers. The SINQ operations are unnor- malized inverses of themselves, so a call to SINQF followed by a call to SINQB will multiply the input sequence by 4 * N. SYNOPSIS SUBROUTINE DSINQB(N, X, WSAVE) INTEGER N DOUBLE PRECISION X(*), WSAVE(*) SUBROUTINE DSINQB_64(N, X, WSAVE) INTEGER*8 N DOUBLE PRECISION X(*), WSAVE(*) F95 INTERFACE SUBROUTINE SINQB(N, X, WSAVE) INTEGER :: N REAL(8), DIMENSION(:) :: X, WSAVE SUBROUTINE SINQB_64(N, X, WSAVE) INTEGER(8) :: N REAL(8), DIMENSION(:) :: X, WSAVE C INTERFACE #include <sunperf.h> void dsinqb(int n, double *x, double *wsave); void dsinqb_64(long n, double *x, double *wsave); ARGUMENTS N (input) Length of the sequence to be transformed. These subroutines are most efficient when N is a product of small primes. N >= 0. X (input/output) On entry, an array of length N containing the sequence to be transformed. On exit, the quarter-wave sine synthesis of the input. WSAVE (input) On entry, an array with dimension of at least (3 * N + 15) for scalar subroutines, initialized by SINQI. 7 Nov 2015 dsinqb(3P)