Add CBLAS library.

Change-Id: I6d5c0ea5eb350f1d35637d8963a78811a4e015d8

1 files changed, 162 insertions, 0 deletions

diff --git a/src/cblas_ztbsv.c b/src/cblas_ztbsv.c
new file mode 100644
index 0000000..e3532b3
--- /dev/null
+++ b/src/cblas_ztbsv.c
@@ -0,0 +1,162 @@
+/*
+ * cblas_ztbsv.c
+ * The program is a C interface to ztbsv.
+ * 
+ * Keita Teranishi  3/23/98
+ *
+ */
+#include "cblas.h"
+#include "cblas_f77.h"
+void cblas_ztbsv(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
+                 const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_DIAG Diag,
+                 const int N, const int K, const void  *A, const int lda,
+                 void  *X, const int incX)
+{
+   char TA;
+   char UL;
+   char DI;
+#ifdef F77_CHAR
+   F77_CHAR F77_TA, F77_UL, F77_DI;
+#else
+   #define F77_TA &TA
+   #define F77_UL &UL
+   #define F77_DI &DI   
+#endif
+#ifdef F77_INT
+   F77_INT F77_N=N, F77_lda=lda, F77_K=K, F77_incX=incX;
+#else
+   #define F77_N N
+   #define F77_K K
+   #define F77_lda lda
+   #define F77_incX incX
+#endif
+   int n, i=0, tincX; 
+   double *st=0,*x=(double *)X;
+   extern int CBLAS_CallFromC;
+   extern int RowMajorStrg;
+   RowMajorStrg = 0;
+
+   CBLAS_CallFromC = 1;
+   if (order == CblasColMajor)
+   {
+      if (Uplo == CblasUpper) UL = 'U';
+      else if (Uplo == CblasLower) UL = 'L';
+      else 
+      {
+         cblas_xerbla(2, "cblas_ztbsv","Illegal Uplo setting, %d\n", Uplo);
+         CBLAS_CallFromC = 0;
+         RowMajorStrg = 0;
+         return;
+      }
+      if (TransA == CblasNoTrans) TA = 'N';
+      else if (TransA == CblasTrans) TA = 'T';
+      else if (TransA == CblasConjTrans) TA = 'C';
+      else 
+      {
+         cblas_xerbla(3, "cblas_ztbsv","Illegal TransA setting, %d\n", TransA);
+         CBLAS_CallFromC = 0;
+         RowMajorStrg = 0;
+         return;
+      }
+      if (Diag == CblasUnit) DI = 'U';
+      else if (Diag == CblasNonUnit) DI = 'N';
+      else 
+      {
+         cblas_xerbla(4, "cblas_ztbsv","Illegal Diag setting, %d\n", Diag);
+         CBLAS_CallFromC = 0;
+         RowMajorStrg = 0;
+         return;
+      }
+      #ifdef F77_CHAR
+         F77_UL = C2F_CHAR(&UL);
+         F77_TA = C2F_CHAR(&TA);
+         F77_DI = C2F_CHAR(&DI);
+      #endif
+      F77_ztbsv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X,
+                      &F77_incX);
+   }
+   else if (order == CblasRowMajor)
+   {
+      RowMajorStrg = 1;
+      if (Uplo == CblasUpper) UL = 'L';
+      else if (Uplo == CblasLower) UL = 'U';
+      else 
+      {
+         cblas_xerbla(2, "cblas_ztbsv","Illegal Uplo setting, %d\n", Uplo);
+         CBLAS_CallFromC = 0;
+         RowMajorStrg = 0;
+         return;
+      }
+
+      if (TransA == CblasNoTrans) TA = 'T';
+      else if (TransA == CblasTrans) TA = 'N';
+      else if (TransA == CblasConjTrans)
+      {
+         TA = 'N';
+         if ( N > 0)
+         {
+            if ( incX > 0 )
+               tincX = incX;
+            else
+               tincX = -incX;
+ 
+            n = N*2*(tincX);
+  
+            x++;
+
+            st=x+n;
+
+            i = tincX << 1;
+            do
+            {
+               *x = -(*x);
+               x+=i;
+            }
+            while (x != st);
+            x -= n;
+         }
+      }
+      else 
+      {
+         cblas_xerbla(3, "cblas_ztbsv","Illegal TransA setting, %d\n", TransA);
+         CBLAS_CallFromC = 0;
+         RowMajorStrg = 0;
+         return;
+      }
+
+      if (Diag == CblasUnit) DI = 'U';
+      else if (Diag == CblasNonUnit) DI = 'N';
+      else 
+      {
+         cblas_xerbla(4, "cblas_ztbsv","Illegal Diag setting, %d\n", Diag);
+         CBLAS_CallFromC = 0;
+         RowMajorStrg = 0;
+         return;
+      }
+      #ifdef F77_CHAR
+         F77_UL = C2F_CHAR(&UL);
+         F77_TA = C2F_CHAR(&TA);
+         F77_DI = C2F_CHAR(&DI);
+      #endif
+
+      F77_ztbsv( F77_UL, F77_TA, F77_DI, &F77_N, &F77_K, A, &F77_lda, X,
+                      &F77_incX);
+
+      if (TransA == CblasConjTrans)
+      {
+         if (N > 0)
+         {
+            do
+            {
+               *x = -(*x);
+               x+= i;
+            }
+            while (x != st);
+         }
+      }
+   }
+   else cblas_xerbla(1, "cblas_ztbsv", "Illegal Order setting, %d\n", order);
+   CBLAS_CallFromC = 0;
+   RowMajorStrg = 0;
+   return;
+}