re-organize folder structure

* move SIMD instructions (SSE2, AVX) to arch folder

include/arch/simd/cglm-intrin.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+#ifndef cglm_intrin_h
+#define cglm_intrin_h
+
+#if defined( _WIN32 )
+#  if (defined(_M_AMD64) || defined(_M_X64)) || _M_IX86_FP == 2
+#    define __SSE2__
+#  elif _M_IX86_FP == 1
+#    define __SSE__
+#  endif
+#endif
+
+#if defined( __SSE__ ) || defined( __SSE2__ )
+
+#include <xmmintrin.h>
+#include <emmintrin.h>
+
+/* float */
+#define _mm_shuffle1_ps(a, z, y, x, w)                                        \
+  _mm_shuffle_ps(a, a, _MM_SHUFFLE(z, y, x, w))
+
+#define _mm_shuffle1_ps1(a, x)                                                \
+  _mm_shuffle_ps(a, a, _MM_SHUFFLE(x, x, x, x))
+
+#define _mm_shuffle2_ps(a, b, z0, y0, x0, w0, z1, y1, x1, w1)                 \
+  _mm_shuffle1_ps(_mm_shuffle_ps(a, b, _MM_SHUFFLE(z0, y0, x0, w0)),          \
+                  z1, y1, x1, w1)
+
+#endif
+#endif /* cglm_intrin_h */