1 /*
2  * cblas_dspr2.c
3  * The program is a C interface to dspr2.
4  *
5  * Keita Teranishi  5/20/98
6  *
7  */
8 #include "cblas.h"
9 #include "cblas_f77.h"
cblas_dspr2(const enum CBLAS_ORDER order,const enum CBLAS_UPLO Uplo,const int N,const double alpha,const double * X,const int incX,const double * Y,const int incY,double * A)10 void cblas_dspr2(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
11                 const int N, const double  alpha, const double  *X,
12                 const int incX, const double  *Y, const int incY, double  *A)
13 {
14    char UL;
15 #ifdef F77_CHAR
16    F77_CHAR F77_UL;
17 #else
18    #define F77_UL &UL
19 #endif
20 
21 #ifdef F77_INT
22    F77_INT F77_N=N, F77_incX=incX, F77_incY=incY;
23 #else
24    #define F77_N N
25    #define F77_incX incX
26    #define F77_incY incY
27 #endif
28 
29    extern int CBLAS_CallFromC;
30    extern int RowMajorStrg;
31    RowMajorStrg = 0;
32    CBLAS_CallFromC = 1;
33    if (order == CblasColMajor)
34    {
35       if (Uplo == CblasLower) UL = 'L';
36       else if (Uplo == CblasUpper) UL = 'U';
37       else
38       {
39          cblas_xerbla(2, "cblas_dspr2","Illegal Uplo setting, %d\n",Uplo );
40          CBLAS_CallFromC = 0;
41          RowMajorStrg = 0;
42          return;
43       }
44       #ifdef F77_CHAR
45          F77_UL = C2F_CHAR(&UL);
46       #endif
47 
48       F77_dspr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY, A);
49 
50    }  else if (order == CblasRowMajor)
51    {
52       RowMajorStrg = 1;
53       if (Uplo == CblasLower) UL = 'U';
54       else if (Uplo == CblasUpper) UL = 'L';
55       else
56       {
57          cblas_xerbla(2, "cblas_dspr2","Illegal Uplo setting, %d\n",Uplo );
58          CBLAS_CallFromC = 0;
59          RowMajorStrg = 0;
60          return;
61       }
62       #ifdef F77_CHAR
63          F77_UL = C2F_CHAR(&UL);
64       #endif
65       F77_dspr2(F77_UL, &F77_N, &alpha, X, &F77_incX, Y, &F77_incY,  A);
66    } else cblas_xerbla(1, "cblas_dspr2", "Illegal Order setting, %d\n", order);
67    CBLAS_CallFromC = 0;
68    RowMajorStrg = 0;
69    return;
70 }
71