|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#include <stdio.h> |
|
#include <stdlib.h> |
|
#include "cblas.h" |
|
#include "cblas_f77.h" |
|
void cblas_chpr2(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo, |
|
const CBLAS_INT_TYPE N,const void *alpha, const void *X, |
|
const CBLAS_INT_TYPE incX,const void *Y, const CBLAS_INT_TYPE incY, void *Ap) |
|
|
|
{ |
|
char UL; |
|
#ifdef F77_CHAR |
|
F77_CHAR F77_UL; |
|
#else |
|
#define F77_UL &UL |
|
#endif |
|
|
|
#ifdef F77_INT |
|
F77_INT F77_N=N, F77_incX=incX, F77_incY=incY; |
|
#else |
|
#define F77_N N |
|
#define F77_incX incx |
|
#define F77_incY incy |
|
#endif |
|
CBLAS_INT_TYPE n, i, j, tincx, tincy, incx=incX, incy=incY; |
|
float *x=(float *)X, *xx=(float *)X, *y=(float *)Y, |
|
*yy=(float *)Y, *tx, *ty, *stx, *sty; |
|
|
|
|
|
if (order == CblasColMajor) |
|
{ |
|
if (Uplo == CblasLower) UL = 'L'; |
|
else if (Uplo == CblasUpper) UL = 'U'; |
|
else |
|
{ |
|
cblas_xerbla(2, "cblas_chpr2","Illegal Uplo setting, %d\n",Uplo ); |
|
return; |
|
} |
|
#ifdef F77_CHAR |
|
F77_UL = C2F_CHAR(&UL); |
|
#endif |
|
|
|
F77_chpr2(F77_UL, &F77_N, alpha, X, &F77_incX, Y, &F77_incY, Ap); |
|
|
|
} else if (order == CblasRowMajor) |
|
{ |
|
if (Uplo == CblasUpper) UL = 'L'; |
|
else if (Uplo == CblasLower) UL = 'U'; |
|
else |
|
{ |
|
cblas_xerbla(2, "cblas_chpr2","Illegal Uplo setting, %d\n", Uplo); |
|
return; |
|
} |
|
#ifdef F77_CHAR |
|
F77_UL = C2F_CHAR(&UL); |
|
#endif |
|
if (N > 0) |
|
{ |
|
n = N << 1; |
|
x = malloc(n*sizeof(float)); |
|
y = malloc(n*sizeof(float)); |
|
tx = x; |
|
ty = y; |
|
if( incX > 0 ) { |
|
i = incX << 1 ; |
|
tincx = 2; |
|
stx= x+n; |
|
} else { |
|
i = incX *(-2); |
|
tincx = -2; |
|
stx = x-2; |
|
x +=(n-2); |
|
} |
|
|
|
if( incY > 0 ) { |
|
j = incY << 1; |
|
tincy = 2; |
|
sty= y+n; |
|
} else { |
|
j = incY *(-2); |
|
tincy = -2; |
|
sty = y-2; |
|
y +=(n-2); |
|
} |
|
|
|
do |
|
{ |
|
*x = *xx; |
|
x[1] = -xx[1]; |
|
x += tincx ; |
|
xx += i; |
|
} |
|
while (x != stx); |
|
do |
|
{ |
|
*y = *yy; |
|
y[1] = -yy[1]; |
|
y += tincy ; |
|
yy += j; |
|
} |
|
while (y != sty); |
|
|
|
x=tx; |
|
y=ty; |
|
|
|
#ifdef F77_INT |
|
F77_incX = 1; |
|
F77_incY = 1; |
|
#else |
|
incx = 1; |
|
incy = 1; |
|
#endif |
|
|
|
} else |
|
{ |
|
x = (float *) X; |
|
y = (void *) Y; |
|
} |
|
F77_chpr2(F77_UL, &F77_N, alpha, y, &F77_incY, x, &F77_incX, Ap); |
|
} else |
|
{ |
|
cblas_xerbla(1, "cblas_chpr2","Illegal Order setting, %d\n", order); |
|
return; |
|
} |
|
if(X!=x) |
|
free(x); |
|
if(Y!=y) |
|
free(y); |
|
return; |
|
} |
|
|
