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#include <stdio.h> |
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#include <stdlib.h> |
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#include "cblas.h" |
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#include "cblas_f77.h" |
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void cblas_chpmv(const enum CBLAS_ORDER order, |
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const enum CBLAS_UPLO Uplo,const CBLAS_INT_TYPE N, |
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const void *alpha, const void *AP, |
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const void *X, const CBLAS_INT_TYPE incX, const void *beta, |
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void *Y, const CBLAS_INT_TYPE incY) |
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{ |
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char UL; |
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#ifdef F77_CHAR |
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F77_CHAR F77_UL; |
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#else |
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#define F77_UL &UL |
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#endif |
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#ifdef F77_INT |
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F77_INT F77_N=N, F77_incX=incX, F77_incY=incY; |
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#else |
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#define F77_N N |
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#define F77_incX incx |
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#define F77_incY incY |
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#endif |
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CBLAS_INT_TYPE n, i=0, incx=incX; |
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const float *xx= (float *)X, *alp= (float *)alpha, *bet = (float *)beta; |
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float ALPHA[2],BETA[2]; |
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CBLAS_INT_TYPE tincY, tincx; |
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float *x=(float *)X, *y=(float *)Y, *st=0, *tx; |
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if (order == CblasColMajor) |
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{ |
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if (Uplo == CblasLower) UL = 'L'; |
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else if (Uplo == CblasUpper) UL = 'U'; |
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else |
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{ |
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cblas_xerbla(2, "cblas_chpmv","Illegal Uplo setting, %d\n",Uplo ); |
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return; |
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} |
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#ifdef F77_CHAR |
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F77_UL = C2F_CHAR(&UL); |
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#endif |
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F77_chpmv(F77_UL, &F77_N, alpha, AP, X, |
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&F77_incX, beta, Y, &F77_incY); |
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} |
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else if (order == CblasRowMajor) |
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{ |
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ALPHA[0]= *alp; |
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ALPHA[1]= -alp[1]; |
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BETA[0]= *bet; |
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BETA[1]= -bet[1]; |
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if (N > 0) |
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{ |
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n = N << 1; |
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x = malloc(n*sizeof(float)); |
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tx = x; |
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if( incX > 0 ) { |
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i = incX << 1; |
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tincx = 2; |
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st= x+n; |
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} else { |
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i = incX *(-2); |
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tincx = -2; |
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st = x-2; |
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x +=(n-2); |
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} |
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do |
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{ |
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*x = *xx; |
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x[1] = -xx[1]; |
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x += tincx ; |
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xx += i; |
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} |
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while (x != st); |
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x=tx; |
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#ifdef F77_INT |
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F77_incX = 1; |
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#else |
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incx = 1; |
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#endif |
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if(incY > 0) |
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tincY = incY; |
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else |
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tincY = -incY; |
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y++; |
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i = tincY << 1; |
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n = i * N ; |
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st = y + n; |
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do { |
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*y = -(*y); |
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y += i; |
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} while(y != st); |
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y -= n; |
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} else |
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x = (float *) X; |
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if (Uplo == CblasUpper) UL = 'L'; |
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else if (Uplo == CblasLower) UL = 'U'; |
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else |
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{ |
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cblas_xerbla(2, "cblas_chpmv","Illegal Uplo setting, %d\n", Uplo ); |
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return; |
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} |
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#ifdef F77_CHAR |
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F77_UL = C2F_CHAR(&UL); |
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#endif |
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F77_chpmv(F77_UL, &F77_N, ALPHA, |
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AP, x, &F77_incX, BETA, Y, &F77_incY); |
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} |
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else |
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{ |
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cblas_xerbla(1, "cblas_chpmv","Illegal Order setting, %d\n", order); |
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return; |
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} |
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if ( order == CblasRowMajor ) |
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{ |
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if(X!=x) |
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free(x); |
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if (N > 0) |
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{ |
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do |
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{ |
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*y = -(*y); |
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y += i; |
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} |
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while (y != st); |
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} |
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} |
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return; |
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} |
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