sgthr(3P) Sun Performance Library sgthr(3P)NAMEsgthr - Gathers specified elements from y into x.
SYNOPSIS
SUBROUTINE SGTHR(NZ, Y, X, INDX)
REAL Y(*), X(*)
INTEGER NZ
INTEGER INDX(*)
SUBROUTINE SGTHR_64(NZ, Y, X, INDX)
REAL Y(*), X(*)
INTEGER*8 NZ
INTEGER*8 INDX(*)
F95 INTERFACE
SUBROUTINE GTHR([NZ], Y, X, INDX)
REAL, DIMENSION(:) :: Y, X
INTEGER :: NZ
INTEGER, DIMENSION(:) :: INDX
SUBROUTINE GTHR_64([NZ], Y, X, INDX)
REAL, DIMENSION(:) :: Y, X
INTEGER(8) :: NZ
INTEGER(8), DIMENSION(:) :: INDX
C INTERFACE
#include <sunperf.h>
void sgthr (const int nz, const float* y, float* x, const int* indx);
void sgthr_64 (const long nz, const float* y, float* x, const long*
indx);
PURPOSE
SGTHR - Gathers the specified elements from a vector y in full storage
form into a vector x in compressed form. Only the elements of y whose
indices are listed in indx are referenced.
do i = 1, n
x(i) = y(indx(i))
enddo
ARGUMENTS
NZ (input) - INTEGER
Number of elements in the compressed form. Unchanged on exit.
Y (input)
Vector in full storage form. Unchanged on exit.
X (output)
Vector in compressed form. Contains elements of y whose
indices are listed in indx on exit.
INDX (input) - INTEGER
Vector containing the indices of the compressed form. It is
assumed that the elements in INDX are distinct and greater than
zero. Unchanged on exit.
3rd Berkeley Distribution 6 Mar 2009 sgthr(3P)
