Add geadd GPU kernel

cudablas/compute/cuda_zgeadd.c

+/**
+ *
+ * @copyright (c) 2009-2014 The University of Tennessee and The University
+ *                          of Tennessee Research Foundation.
+ *                          All rights reserved.
+ * @copyright (c) 2012-2016 Inria. All rights reserved.
+ * @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
+ *
+ **/
+
+/**
+ *
+ * @file cuda_zgeadd.c
+ *
+ *  MORSE cudablas kernel
+ *  MORSE is a software package provided by Univ. of Tennessee,
+ *  Univ. of California Berkeley and Univ. of Colorado Denver,
+ *  and INRIA Bordeaux Sud-Ouest
+ *
+ * @author Florent Pruvost
+ * @date 2015-09-17
+ * @precisions normal z -> c d s
+ *
+ **/
+#include "cudablas/include/cudablas.h"
+#include "cudablas/include/cudablas_z.h"
+
+#if !defined(CHAMELEON_USE_CUBLAS_V2)
+#error "This file requires cublas api v2 support"
+#endif
+
+int CUDA_zgeadd(MORSE_enum transa, MORSE_enum transb,
+               int m, int n, int k,
+               cuDoubleComplex *alpha,
+               const cuDoubleComplex *A, int lda,
+               const cuDoubleComplex *B, int ldb,
+               cuDoubleComplex *beta,
+               cuDoubleComplex *C, int ldc,
+               CUBLAS_STREAM_PARAM)
+{
+    cublasZgeam(CUBLAS_HANDLE
+                morse_cublas_const(transa), morse_cublas_const(transb),
+                m, n, k,
+                CUBLAS_VALUE(alpha), A, lda,
+                                     B, ldb,
+                CUBLAS_VALUE(beta),  C, ldc);
+
+    assert( CUBLAS_STATUS_SUCCESS == cublasGetError() );
+
+    return MORSE_SUCCESS;
+}