1 files changed, 159 insertions, 0 deletions
diff --git a/CBLAS/src/cblas_chbmv.c b/CBLAS/src/cblas_chbmv.c
new file mode 100644
index 00000000..e5058f1e
--- /dev/null
+++ b/CBLAS/src/cblas_chbmv.c
@@ -0,0 +1,159 @@
+/*
+ * cblas_chbmv.c
+ * The program is a C interface to chbmv
+ * 
+ * Keita Teranishi  5/18/98
+ *
+ */
+#include "cblas.h"
+#include "cblas_f77.h"
+#include <stdio.h>
+#include <stdlib.h>
+void cblas_chbmv(const CBLAS_LAYOUT layout,
+                 const CBLAS_UPLO Uplo,const int N,const int K,
+                 const void *alpha, const void  *A, const int lda,
+                 const void  *X, const int incX, const void *beta,
+                 void  *Y, const int incY)
+{
+   char UL;
+#ifdef F77_CHAR
+   F77_CHAR F77_UL;
+#else
+   #define F77_UL &UL   
+#endif
+#ifdef F77_INT
+   F77_INT F77_N=N, F77_K=K, F77_lda=lda, F77_incX=incX, F77_incY=incY;
+#else
+   #define F77_N N
+   #define F77_K K
+   #define F77_lda lda
+   #define F77_incX incx
+   #define F77_incY incY
+#endif
+   int n, i=0, incx=incX;
+   const float *xx= (float *)X, *alp= (float *)alpha, *bet = (float *)beta;
+   float ALPHA[2],BETA[2];
+   int tincY, tincx;
+   float *x=(float *)X, *y=(float *)Y, *st=0, *tx;
+   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_chbmv","Illegal Uplo setting, %d\n",Uplo );
+         CBLAS_CallFromC = 0;
+         RowMajorStrg = 0;
+         return;
+      }
+      #ifdef F77_CHAR
+         F77_UL = C2F_CHAR(&UL);
+      #endif
+      F77_chbmv(F77_UL, &F77_N, &F77_K, alpha, A, &F77_lda, X,  
+                     &F77_incX, beta, Y, &F77_incY);
+   }
+   else if (layout == CblasRowMajor)
+   {
+      RowMajorStrg = 1;
+      ALPHA[0]= *alp;
+      ALPHA[1]= -alp[1];
+      BETA[0]= *bet;
+      BETA[1]= -bet[1];
+
+      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
+ 
+         if(incY > 0)
+           tincY = incY;
+         else
+           tincY = -incY;
+         y++;
+
+         i = tincY << 1;
+         n = i * N ;
+         st = y + n;
+         do {
+            *y = -(*y);
+            y += i;
+         } while(y != st);
+         y -= n;
+      }  else
+         x = (float *) X; 
+
+      if (Uplo == CblasUpper) UL = 'L';
+      else if (Uplo == CblasLower) UL = 'U';
+      else 
+      {
+         cblas_xerbla(2, "cblas_chbmv","Illegal Uplo setting, %d\n", Uplo);
+         CBLAS_CallFromC = 0;
+         RowMajorStrg = 0;
+         return;
+      }
+      #ifdef F77_CHAR
+         F77_UL = C2F_CHAR(&UL);
+      #endif
+      F77_chbmv(F77_UL, &F77_N, &F77_K, ALPHA, 
+                     A ,&F77_lda, x,&F77_incX, BETA, Y, &F77_incY);
+   }
+   else 
+   {
+      cblas_xerbla(1, "cblas_chbmv","Illegal layout setting, %d\n", layout);
+      CBLAS_CallFromC = 0;
+      RowMajorStrg = 0;
+      return;
+   }
+   if ( layout == CblasRowMajor )
+   {
+      RowMajorStrg = 1;
+      if(X!=x)
+         free(x);
+      if (N > 0)
+      {
+         do
+         {
+            *y = -(*y);
+            y += i;
+         }
+         while (y != st);
+      }
+   }
+   CBLAS_CallFromC = 0;
+   RowMajorStrg = 0;
+   return;
+}