text: /*
   * cblas_cher.c
   * The program is a C interface to cher.
   *
   * Keita Teranishi  5/20/98
   *
   */
  #include <stdio.h>
  #include <stdlib.h>
  #include "cblas.h"
  #include "cblas_f77.h"
  void cblas_cher(const CBLAS_LAYOUT layout, const CBLAS_UPLO Uplo,
                  const CBLAS_INT N, const float alpha, const void *X, const CBLAS_INT incX
                  ,void *A, const CBLAS_INT lda)
  {
     char UL;
  #ifdef F77_CHAR
     F77_CHAR F77_UL;
  #else
     #define F77_UL &UL
  #endif
  
  #ifdef F77_INT
     F77_INT F77_N=N, F77_lda=lda, F77_incX=incX;
  #else
     #define F77_N N
     #define F77_lda lda
     #define F77_incX incx
  #endif
     CBLAS_INT n, i, tincx, incx=incX;
     float *x=(float *)X, *xx=(float *)X, *tx, *st;
  
     extern int CBLAS_CallFromC;
     extern int RowMajorStrg;
     RowMajorStrg = 0;
  
     CBLAS_CallFromC = 1;
     if (layout == CblasColMajor)
     {
        if (Uplo == CblasLower) UL = 'L';
        else if (Uplo == CblasUpper) UL = 'U';
        else
        {
           cblas_xerbla(2, "cblas_cher","Illegal Uplo setting, %d\n",Uplo );
           CBLAS_CallFromC = 0;
           RowMajorStrg = 0;
           return;
        }
        #ifdef F77_CHAR
           F77_UL = C2F_CHAR(&UL);
        #endif
  
        F77_cher(F77_UL, &F77_N, &alpha, X, &F77_incX, A, &F77_lda);
  
     }  else if (layout == CblasRowMajor)
     {
        RowMajorStrg = 1;
        if (Uplo == CblasUpper) UL = 'L';
        else if (Uplo == CblasLower) UL = 'U';
        else
        {
           cblas_xerbla(2, "cblas_cher","Illegal Uplo setting, %d\n", Uplo);
           CBLAS_CallFromC = 0;
           RowMajorStrg = 0;
           return;
        }
        #ifdef F77_CHAR
           F77_UL = C2F_CHAR(&UL);
        #endif
        if (N > 0)
        {
           n = N << 1;
           x = malloc(n*sizeof(float));
           tx = x;
           if( incX > 0 ) {
              i = incX << 1 ;
              tincx = 2;
              st= x+n;
           } else {
              i = incX *(-2);
              tincx = -2;
              st = x-2;
              x +=(n-2);
           }
           do
           {
              *x = *xx;
              x[1] = -xx[1];
              x += tincx ;
              xx += i;
           }
           while (x != st);
           x=tx;
  
           #ifdef F77_INT
             F77_incX = 1;
           #else
             incx = 1;
           #endif
        }
        else x = (float *) X;
        F77_cher(F77_UL, &F77_N, &alpha, x, &F77_incX, A, &F77_lda);
     } else
     {
        cblas_xerbla(1, "cblas_cher","Illegal layout setting, %d\n", layout);
        CBLAS_CallFromC = 0;
        RowMajorStrg = 0;
        return;
     }
     if(X!=x)
        free(x);
  
     CBLAS_CallFromC = 0;
     RowMajorStrg = 0;
     return;
  }
  