simd like convenient funcs

include/cglm-vec-ext.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+/*!
+ * @brief SIMD like functions
+ */
+
+#ifndef cglm_vec_ext_h
+#define cglm_vec_ext_h
+
+#include "cglm-common.h"
+#include "cglm-intrin.h"
+
+/*!
+ * @brief multiplies individual items, just for convenient like SIMD
+ *
+ * @param a vec1
+ * @param b vec2
+ * @param d vec3 = (v1[0] * v2[0],  v1[1] * v2[1], v1[2] * v2[2])
+ */
+CGLM_INLINE
+void
+glm_vec_mulv(vec3 a, vec3 b, vec3 d) {
+  d[0] = a[0] * b[0];
+  d[1] = a[1] * b[1];
+  d[2] = a[2] * b[2];
+}
+
+/*!
+ * @brief multiplies individual items, just for convenient like SIMD
+ *
+ * @param a v1
+ * @param b v2
+ * @param d v3 = (v1[0] * v2[0],  v1[1] * v2[1], v1[2] * v2[2], v1[3] * v2[3])
+ */
+CGLM_INLINE
+void
+glm_vec4_mulv(vec4 a, vec4 b, vec4 d) {
+#if defined( __SSE__ ) || defined( __SSE2__ )
+  _mm_store_ps(d, _mm_mul_ps(_mm_load_ps(a), _mm_load_ps(b)));
+#else
+  d[0] = a[0] * b[0];
+  d[1] = a[1] * b[1];
+  d[2] = a[2] * b[2];
+  d[3] = a[3] * b[3];
+#endif
+}
+
+#endif /* cglm_vec_ext_h */

include/cglm-vec.h

@@ -15,6 +15,7 @@
 
 #include "cglm-common.h"
 #include "cglm-intrin.h"
+#include "cglm-vec-ext.h"
 
 /*!
  * @brief copy all members of [a] to [dest]