181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray/* 281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray * cblas_zhbmv.c 381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray * The program is a C interface to zhbmv 481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray * 581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray * Keita Teranishi 5/18/98 681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray * 781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray */ 881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#include "cblas.h" 981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#include "cblas_f77.h" 1081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#include <stdio.h> 1181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#include <stdlib.h> 1281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murrayvoid cblas_zhbmv(const enum CBLAS_ORDER order, 1381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray const enum CBLAS_UPLO Uplo,const int N,const int K, 1481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray const void *alpha, const void *A, const int lda, 1581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray const void *X, const int incX, const void *beta, 1681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray void *Y, const int incY) 1781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray{ 1881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray char UL; 1981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#ifdef F77_CHAR 2081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray F77_CHAR F77_UL; 2181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#else 2281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #define F77_UL &UL 2381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#endif 2481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#ifdef F77_INT 2581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray F77_INT F77_N=N, F77_K=K, F77_lda=lda, F77_incX=incX, F77_incY=incY; 2681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#else 2781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #define F77_N N 2881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #define F77_K K 2981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #define F77_lda lda 3081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #define F77_incX incx 3181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #define F77_incY incY 3281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray#endif 3381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray int n, i=0, incx=incX; 3481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray const double *xx= (double *)X, *alp= (double *)alpha, *bet = (double *)beta; 3581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray double ALPHA[2],BETA[2]; 3681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray int tincY, tincx; 3781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray double *x=(double *)X, *y=(double *)Y, *st=0, *tx; 3881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray extern int CBLAS_CallFromC; 3981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray extern int RowMajorStrg; 4081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray RowMajorStrg = 0; 4181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 4281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray CBLAS_CallFromC = 1; 4381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if (order == CblasColMajor) 4481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 4581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if (Uplo == CblasLower) UL = 'L'; 4681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray else if (Uplo == CblasUpper) UL = 'U'; 4781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray else 4881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 4981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray cblas_xerbla(2, "cblas_zhbmv","Illegal Uplo setting, %d\n",Uplo ); 5081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray CBLAS_CallFromC = 0; 5181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray RowMajorStrg = 0; 5281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray return; 5381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 5481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #ifdef F77_CHAR 5581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray F77_UL = C2F_CHAR(&UL); 5681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #endif 5781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray F77_zhbmv(F77_UL, &F77_N, &F77_K, alpha, A, &F77_lda, X, 5881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray &F77_incX, beta, Y, &F77_incY); 5981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 6081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray else if (order == CblasRowMajor) 6181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 6281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray RowMajorStrg = 1; 6381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray ALPHA[0]= *alp; 6481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray ALPHA[1]= -alp[1]; 6581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray BETA[0]= *bet; 6681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray BETA[1]= -bet[1]; 6781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 6881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if (N > 0) 6981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 7081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray n = N << 1; 7181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray x = malloc(n*sizeof(double)); 7281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 7381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray tx = x; 7481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if( incX > 0 ) { 7581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray i = incX << 1 ; 7681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray tincx = 2; 7781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray st= x+n; 7881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } else { 7981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray i = incX *(-2); 8081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray tincx = -2; 8181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray st = x-2; 8281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray x +=(n-2); 8381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 8481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 8581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray do 8681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 8781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray *x = *xx; 8881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray x[1] = -xx[1]; 8981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray x += tincx ; 9081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray xx += i; 9181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 9281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray while (x != st); 9381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray x=tx; 9481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 9581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 9681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #ifdef F77_INT 9781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray F77_incX = 1; 9881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #else 9981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray incx = 1; 10081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #endif 10181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 10281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if(incY > 0) 10381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray tincY = incY; 10481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray else 10581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray tincY = -incY; 10681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray y++; 10781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 10881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray i = tincY << 1; 10981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray n = i * N ; 11081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray st = y + n; 11181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray do { 11281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray *y = -(*y); 11381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray y += i; 11481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } while(y != st); 11581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray y -= n; 11681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } else 11781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray x = (double *) X; 11881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray 11981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if (Uplo == CblasUpper) UL = 'L'; 12081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray else if (Uplo == CblasLower) UL = 'U'; 12181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray else 12281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 12381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray cblas_xerbla(2, "cblas_zhbmv","Illegal Uplo setting, %d\n", Uplo); 12481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray CBLAS_CallFromC = 0; 12581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray RowMajorStrg = 0; 12681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray return; 12781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 12881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #ifdef F77_CHAR 12981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray F77_UL = C2F_CHAR(&UL); 13081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray #endif 13181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray F77_zhbmv(F77_UL, &F77_N, &F77_K, ALPHA, 13281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray A ,&F77_lda, x,&F77_incX, BETA, Y, &F77_incY); 13381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 13481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray else 13581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 13681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray cblas_xerbla(1, "cblas_zhbmv","Illegal Order setting, %d\n", order); 13781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray CBLAS_CallFromC = 0; 13881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray RowMajorStrg = 0; 13981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray return; 14081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 14181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if ( order == CblasRowMajor ) 14281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 14381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray RowMajorStrg = 1; 14481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if(X!=x) 14581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray free(x); 14681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray if (N > 0) 14781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 14881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray do 14981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray { 15081253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray *y = -(*y); 15181253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray y += i; 15281253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 15381253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray while (y != st); 15481253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 15581253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray } 15681253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray CBLAS_CallFromC = 0; 15781253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray RowMajorStrg = 0; 15881253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray return; 15981253e9afbc34b99e9adc22ddf33a1bfac56c697Tim Murray} 160