Merge pull request #5491 from martin-frbg/fixup5485

Rework definitions of ?FLOAT16_GEMM_GEMV_FORWARD to avoid undefined behavior

Author: martin-frbg

interface/gemm.c

@@ -587,8 +587,16 @@ void CNAME(enum CBLAS_ORDER order, enum CBLAS_TRANSPOSE TransA, enum CBLAS_TRANS
 	 args.m, args.n, args.k, args.lda, args.ldb, args.ldc);
 #endif
 
-#define BFLOAT16_GEMM_GEMV_FORWARD (!defined(BFLOAT16) || (!defined(BGEMM) && defined(SBGEMM_GEMV_FORWARD)) || (defined(BGEMM) && defined(BGEMM_GEMV_FORWARD)))
-#define HFLOAT16_GEMM_GEMV_FORWARD (!defined(HFLOAT16) || (!defined(HGEMM) && defined(SHGEMM_GEMV_FORWARD)) || (defined(HGEMM) && defined(HGEMM_GEMV_FORWARD)))
+#if (!defined(BFLOAT16) || (!defined(BGEMM) && defined(SBGEMM_GEMV_FORWARD)) || (defined(BGEMM) && defined(BGEMM_GEMV_FORWARD)))
+#define BFLOAT16_GEMM_GEMV_FORWARD 1
+#else
+#define BFLOAT16_GEMM_GEMV_FORWARD 0
+#endif
+#if (!defined(HFLOAT16) || (!defined(HGEMM) && defined(SHGEMM_GEMV_FORWARD)) || (defined(HGEMM) && defined(HGEMM_GEMV_FORWARD)))
+#define HFLOAT16_GEMM_GEMV_FORWARD 1
+#else
+#define HFLOAT16_GEMM_GEMV_FORWARD 0
+#endif
 
 #if defined(GEMM_GEMV_FORWARD) && !defined(GEMM3M) && !defined(COMPLEX) && HFLOAT16_GEMM_GEMV_FORWARD && BFLOAT16_GEMM_GEMV_FORWARD
 #if defined(ARCH_ARM64)