F77_sspr2()

void F77_sspr2	(	CBLAS_INT *	layout,
		char *	uplow,
		CBLAS_INT *	n,
		float *	alpha,
		float *	x,
		CBLAS_INT *	incx,
		float *	y,
		CBLAS_INT *	incy,
		float *	ap )

Definition at line 585 of file c_sblas2.c.

 {
  float *A, *AP;
  CBLAS_INT i,j,k,LDA;
  CBLAS_UPLO uplo;
 
  get_uplo_type(uplow,&uplo);
 
  if (*layout == TEST_ROW_MJR) {
     LDA = *n;
     A   = ( float* )malloc( LDA*LDA*sizeof( float ) );
     AP  = ( float* )malloc( (((LDA+1)*LDA)/2)*sizeof( float ) );
     if (uplo == CblasUpper) {
        for( j=0, k=0; j<*n; j++ )
           for( i=0; i<j+1; i++, k++ )
              A[ LDA*i+j ]=ap[ k ];
        for( i=0, k=0; i<*n; i++ )
           for( j=i; j<*n; j++, k++ )
              AP[ k ]=A[ LDA*i+j ];
     }
     else {
        for( j=0, k=0; j<*n; j++ )
           for( i=j; i<*n; i++, k++ )
              A[ LDA*i+j ]=ap[ k ];
        for( i=0, k=0; i<*n; i++ )
           for( j=0; j<i+1; j++, k++ )
              AP[ k ]=A[ LDA*i+j ];
     }
     cblas_sspr2( CblasRowMajor, uplo, *n, *alpha, x, *incx, y, *incy, AP );
     if (uplo == CblasUpper) {
        for( i=0, k=0; i<*n; i++ )
           for( j=i; j<*n; j++, k++ )
              A[ LDA*i+j ]=AP[ k ];
        for( j=0, k=0; j<*n; j++ )
           for( i=0; i<j+1; i++, k++ )
              ap[ k ]=A[ LDA*i+j ];
     }
     else {
        for( i=0, k=0; i<*n; i++ )
           for( j=0; j<i+1; j++, k++ )
              A[ LDA*i+j ]=AP[ k ];
        for( j=0, k=0; j<*n; j++ )
           for( i=j; i<*n; i++, k++ )
              ap[ k ]=A[ LDA*i+j ];
     }
     free(A);
     free(AP);
  }
  else
     cblas_sspr2( CblasColMajor, uplo, *n, *alpha, x, *incx, y, *incy, ap );
}

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