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      1 /*
      2  *
      3  * cblas_ssyr.c
      4  * This program is a C interface to ssyr.
      5  * Written by Keita Teranishi
      6  * 4/6/1998
      7  *
      8  */
      9 #include "cblas.h"
     10 #include "cblas_f77.h"
     11 void cblas_ssyr(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
     12                 const int N, const float  alpha, const float  *X,
     13                 const int incX, float  *A, const int lda)
     14 {
     15    char UL;
     16 #ifdef F77_CHAR
     17    F77_CHAR F77_UL;
     18 #else
     19    #define F77_UL &UL
     20 #endif
     21 
     22 #ifdef F77_INT
     23    F77_INT F77_N=N, F77_incX=incX, F77_lda=lda;
     24 #else
     25    #define F77_N N
     26    #define F77_incX incX
     27    #define F77_lda  lda
     28 #endif
     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_ssyr","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_ssyr(F77_UL, &F77_N, &alpha, X, &F77_incX, A, &F77_lda);
     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_ssyr","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_ssyr(F77_UL, &F77_N, &alpha, X, &F77_incX, A, &F77_lda);
     66    } else cblas_xerbla(1, "cblas_ssyr", "Illegal Order setting, %d\n", order);
     67    CBLAS_CallFromC = 0;
     68    RowMajorStrg = 0;
     69    return;
     70 }
     71