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      1 /*
      2  *
      3  * cblas_sspr.c
      4  * This program is a C interface to sspr.
      5  * Written by Keita Teranishi
      6  * 4/6/1998
      7  *
      8  */
      9 
     10 #include "cblas.h"
     11 #include "cblas_f77.h"
     12 void cblas_sspr(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
     13                 const int N, const  float alpha, const float *X,
     14                 const int incX, float *Ap)
     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;
     25 #else
     26    #define F77_N N
     27    #define F77_incX incX
     28 #endif
     29 
     30    extern int CBLAS_CallFromC;
     31    extern int RowMajorStrg;
     32    RowMajorStrg = 0;
     33 
     34    CBLAS_CallFromC = 1;
     35    if (order == CblasColMajor)
     36    {
     37       if (Uplo == CblasLower) UL = 'L';
     38       else if (Uplo == CblasUpper) UL = 'U';
     39       else
     40       {
     41          cblas_xerbla(2, "cblas_sspr","Illegal Uplo setting, %d\n",Uplo );
     42          CBLAS_CallFromC = 0;
     43          RowMajorStrg = 0;
     44          return;
     45       }
     46       #ifdef F77_CHAR
     47          F77_UL = C2F_CHAR(&UL);
     48       #endif
     49 
     50       F77_sspr(F77_UL, &F77_N, &alpha, X, &F77_incX, Ap);
     51 
     52    }  else if (order == CblasRowMajor)
     53    {
     54       RowMajorStrg = 1;
     55       if (Uplo == CblasLower) UL = 'U';
     56       else if (Uplo == CblasUpper) UL = 'L';
     57       else
     58       {
     59          cblas_xerbla(2, "cblas_sspr","Illegal Uplo setting, %d\n",Uplo );
     60          CBLAS_CallFromC = 0;
     61          RowMajorStrg = 0;
     62          return;
     63       }
     64       #ifdef F77_CHAR
     65          F77_UL = C2F_CHAR(&UL);
     66       #endif
     67       F77_sspr(F77_UL, &F77_N, &alpha, X, &F77_incX, Ap);
     68    } else cblas_xerbla(1, "cblas_sspr", "Illegal Order setting, %d\n", order);
     69    CBLAS_CallFromC = 0;
     70    RowMajorStrg = 0;
     71    return;
     72 }
     73