hip: Fix half definition when using hip

gpuhipblas/compute/hip_hgemm.c

@@ -19,11 +19,11 @@
 int
 HIP_hgemm( cham_trans_t transa, cham_trans_t transb,
            int m, int n, int k,
-           const CHAMELEON_Real16_t *alpha,
-           const CHAMELEON_Real16_t *A, int lda,
-           const CHAMELEON_Real16_t *B, int ldb,
-           const CHAMELEON_Real16_t *beta,
-           CHAMELEON_Real16_t *C, int ldc,
+           const hipblasHalf *alpha,
+           const hipblasHalf *A, int lda,
+           const hipblasHalf *B, int ldb,
+           const hipblasHalf *beta,
+           hipblasHalf *C, int ldc,
            hipblasHandle_t handle )
 {
     hipblasStatus_t rc;

gpuhipblas/include/gpuhipblas.h

@@ -62,11 +62,11 @@ BEGIN_C_DECLS
 
 int HIP_hgemm( cham_trans_t transa, cham_trans_t transb,
                int m, int n, int k,
-               const CHAMELEON_Real16_t *alpha,
-               const CHAMELEON_Real16_t *A, int lda,
-               const CHAMELEON_Real16_t *B, int ldb,
-               const CHAMELEON_Real16_t *beta,
-               CHAMELEON_Real16_t *C, int ldc,
+               const hipblasHalf *alpha,
+               const hipblasHalf *A, int lda,
+               const hipblasHalf *B, int ldb,
+               const hipblasHalf *beta,
+               hipblasHalf *C, int ldc,
                hipblasHandle_t handle );
 
 END_C_DECLS

include/chameleon/types.h

@@ -109,6 +109,8 @@ typedef int8_t cham_bool_t;
  */
 #if defined(__cplusplus) && defined(CHAMELEON_USE_CUDA) && (CUDA_VERSION >= 7500)
 typedef __half CHAMELEON_Real16_t;
+#elif defined(CHAMELEON_USE_HIP) && defined(__HIP__)
+typedef hipblasHalf CHAMELEON_Real16_t;
 #else
 /* use short for cuda older than 7.5 and non-cuda files
  * corresponding routines would not work anyway since there is no half precision */