1 /*
2  *
3  * cblas_dsyr.c
4  * This program is a C interface to dsyr.
5  * Written by Keita Teranishi
6  * 4/6/1998
7  *
8  */
9 
10 #include "cblas.h"
11 #include "cblas_f77.h"
cblas_dsyr(const enum CBLAS_ORDER order,const enum CBLAS_UPLO Uplo,const int N,const double alpha,const double * X,const int incX,double * A,const int lda)12 void cblas_dsyr(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
13                 const int N, const double  alpha, const double  *X,
14                 const int incX, double  *A, const int lda)
15 {
16    char UL;
17 #ifdef F77_CHAR
18    F77_CHAR F77_UL;
19 #else
20    #define F77_UL &UL
21 #endif
22 
23 #ifdef F77_INT
24    F77_INT F77_N=N, F77_incX=incX, F77_lda=lda;
25 #else
26    #define F77_N N
27    #define F77_incX incX
28    #define F77_lda  lda
29 #endif
30    extern int CBLAS_CallFromC;
31    extern int RowMajorStrg;
32    RowMajorStrg = 0;
33    CBLAS_CallFromC = 1;
34    if (order == CblasColMajor)
35    {
36       if (Uplo == CblasLower) UL = 'L';
37       else if (Uplo == CblasUpper) UL = 'U';
38       else
39       {
40          cblas_xerbla(2, "cblas_dsyr","Illegal Uplo setting, %d\n",Uplo );
41          CBLAS_CallFromC = 0;
42          RowMajorStrg = 0;
43          return;
44       }
45       #ifdef F77_CHAR
46          F77_UL = C2F_CHAR(&UL);
47       #endif
48 
49       F77_dsyr(F77_UL, &F77_N, &alpha, X, &F77_incX, A, &F77_lda);
50 
51    }  else if (order == CblasRowMajor)
52    {
53       RowMajorStrg = 1;
54       if (Uplo == CblasLower) UL = 'U';
55       else if (Uplo == CblasUpper) UL = 'L';
56       else
57       {
58          cblas_xerbla(2, "cblas_dsyr","Illegal Uplo setting, %d\n",Uplo );
59          CBLAS_CallFromC = 0;
60          RowMajorStrg = 0;
61          return;
62       }
63       #ifdef F77_CHAR
64          F77_UL = C2F_CHAR(&UL);
65       #endif
66       F77_dsyr(F77_UL, &F77_N, &alpha, X, &F77_incX, A, &F77_lda);
67    } else cblas_xerbla(1, "cblas_dsyr", "Illegal Order setting, %d\n", order);
68    CBLAS_CallFromC = 0;
69    RowMajorStrg = 0;
70    return;
71 }
72