1 files changed, 139 insertions, 0 deletions
diff --git a/ml/dlib/dlib/external/cblas/cblas_cher2.c b/ml/dlib/dlib/external/cblas/cblas_cher2.c
new file mode 100644
index 000000000..89d36a0ee
--- /dev/null
+++ b/ml/dlib/dlib/external/cblas/cblas_cher2.c
@@ -0,0 +1,139 @@
+/*
+ * cblas_cher2.c
+ * The program is a C interface to cher2.
+ * 
+ * Keita Teranishi  3/23/98
+ *
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include "cblas.h"
+#include "cblas_f77.h"
+void cblas_cher2(const enum CBLAS_ORDER order, const enum CBLAS_UPLO Uplo,
+                 const int N, const void *alpha, const void *X, const int incX,
+                 const void *Y, const int incY, void *A, const 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, F77_incY=incY;
+#else
+   #define F77_N N
+   #define F77_lda lda
+   #define F77_incX incx
+   #define F77_incY incy
+#endif
+   int n, i, j, tincx, tincy, incx=incX, incy=incY;
+   float *x=(float *)X, *xx=(float *)X, *y=(float *)Y, 
+         *yy=(float *)Y, *tx, *ty, *stx, *sty;
+
+ 
+   if (order == CblasColMajor)
+   {
+      if (Uplo == CblasLower) UL = 'L';
+      else if (Uplo == CblasUpper) UL = 'U';
+      else 
+      {
+         cblas_xerbla(2, "cblas_cher2","Illegal Uplo setting, %d\n",Uplo );
+         return;
+      }
+      #ifdef F77_CHAR
+         F77_UL = C2F_CHAR(&UL);
+      #endif
+
+      F77_cher2(F77_UL, &F77_N, alpha, X, &F77_incX, 
+                                            Y, &F77_incY, A, &F77_lda);
+
+   }  else if (order == CblasRowMajor)
+   {
+      if (Uplo == CblasUpper) UL = 'L';
+      else if (Uplo == CblasLower) UL = 'U';
+      else 
+      {
+         cblas_xerbla(2, "cblas_cher2","Illegal Uplo setting, %d\n", Uplo);
+         return;
+      }
+      #ifdef F77_CHAR
+         F77_UL = C2F_CHAR(&UL);
+      #endif
+      if (N > 0)
+      {
+         n = N << 1;
+         x = malloc(n*sizeof(float));
+         y = malloc(n*sizeof(float));         
+         tx = x;
+         ty = y;
+         if( incX > 0 ) {
+            i = incX << 1 ;
+            tincx = 2;
+            stx= x+n;
+         } else { 
+            i = incX *(-2);
+            tincx = -2;
+            stx = x-2; 
+            x +=(n-2); 
+         }
+         
+         if( incY > 0 ) {
+            j = incY << 1;
+            tincy = 2;
+            sty= y+n;
+         } else { 
+            j = incY *(-2);
+            tincy = -2;
+            sty = y-2; 
+            y +=(n-2); 
+         }
+
+         do
+         {
+            *x = *xx;
+            x[1] = -xx[1];
+            x += tincx ;
+            xx += i;
+         }
+         while (x != stx);
+
+         do
+         {
+            *y = *yy;
+            y[1] = -yy[1];
+            y += tincy ;
+            yy += j;
+         }
+         while (y != sty);
+
+         x=tx;
+         y=ty;
+
+         #ifdef F77_INT
+            F77_incX = 1;
+            F77_incY = 1;
+         #else
+            incx = 1;
+            incy = 1;
+         #endif
+      }  else 
+      {
+         x = (float *) X;
+         y = (float *) Y;
+      }
+      F77_cher2(F77_UL, &F77_N, alpha, y, &F77_incY, x, 
+                                      &F77_incX, A, &F77_lda);
+   } else 
+   {
+      cblas_xerbla(1, "cblas_cher2","Illegal Order setting, %d\n", order);
+      return;
+   }
+   if(X!=x)
+      free(x);
+   if(Y!=y)
+      free(y);
+
+   return;
+}