From 118980e02e59ff31871df59dce257075394f3533 Mon Sep 17 00:00:00 2001
From: Aaditya Dhruv <aadityadhruv@mailbox.org>
Date: Sun, 25 Jan 2026 15:10:37 -0600
Subject: wip

---
 include/cglm/simd/intrin.h | 153 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 include/cglm/simd/intrin.h

(limited to 'include/cglm/simd/intrin.h')

diff --git a/include/cglm/simd/intrin.h b/include/cglm/simd/intrin.h
new file mode 100644
index 0000000..c477f34
--- /dev/null
+++ b/include/cglm/simd/intrin.h
@@ -0,0 +1,153 @@
+/*
+ * 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(_MSC_VER) && !defined(_M_ARM64EC)
+#  if (defined(_M_AMD64) || defined(_M_X64)) || _M_IX86_FP == 2
+#    ifndef __SSE__
+#      define __SSE__
+#    endif
+#    ifndef __SSE2__
+#      define __SSE2__
+#    endif
+#  elif _M_IX86_FP == 1
+#    ifndef __SSE__
+#      define __SSE__
+#    endif
+#  endif
+/* do not use alignment for older visual studio versions */
+/* also ARM32 also causes similar error, disable it for now on ARM32 too */
+#  if _MSC_VER < 1913 || _M_ARM     /* Visual Studio 2017 version 15.6 */
+#    define CGLM_ALL_UNALIGNED
+#  endif
+#endif
+
+#ifdef __AVX__
+#  include <immintrin.h>
+#  define CGLM_AVX_FP 1
+#    ifndef __SSE2__
+#      define __SSE2__
+#    endif
+#    ifndef __SSE3__
+#      define __SSE3__
+#    endif
+#    ifndef __SSE4__
+#      define __SSE4__
+#    endif
+#    ifndef __SSE4_1__
+#      define __SSE4_1__
+#    endif
+#    ifndef __SSE4_2__
+#      define __SSE4_2__
+#    endif
+#  ifndef CGLM_SIMD_x86
+#    define CGLM_SIMD_x86
+#  endif
+#endif
+
+#if defined(__SSE__)
+#  include <xmmintrin.h>
+#  define CGLM_SSE_FP 1
+#  ifndef CGLM_SIMD_x86
+#    define CGLM_SIMD_x86
+#  endif
+#endif
+
+#if defined(__SSE2__)
+#  include <emmintrin.h>
+#  define CGLM_SSE2_FP 1
+#  ifndef CGLM_SIMD_x86
+#    define CGLM_SIMD_x86
+#  endif
+#endif
+
+#if defined(__SSE3__)
+#  include <pmmintrin.h>
+#  ifndef CGLM_SIMD_x86
+#    define CGLM_SIMD_x86
+#  endif
+#endif
+
+#if defined(__SSE4_1__)
+#  include <smmintrin.h>
+#  ifndef CGLM_SIMD_x86
+#    define CGLM_SIMD_x86
+#  endif
+#endif
+
+#if defined(__SSE4_2__)
+#  include <nmmintrin.h>
+#  ifndef CGLM_SIMD_x86
+#    define CGLM_SIMD_x86
+#  endif
+#endif
+
+/* ARM Neon */
+#if defined(_WIN32) && defined(_MSC_VER)
+/* TODO: non-ARM stuff already inported, will this be better option */
+/* #  include <intrin.h> */
+
+#  if defined(_M_ARM64) || defined(_M_HYBRID_X86_ARM64) || defined(_M_ARM64EC)
+#    include <arm64intr.h>
+#    include <arm64_neon.h>
+#    ifndef CGLM_NEON_FP
+#      define CGLM_NEON_FP  1
+#    endif
+#    ifndef CGLM_SIMD_ARM
+#      define CGLM_SIMD_ARM
+#    endif
+#  elif defined(_M_ARM)
+#    include <armintr.h>
+#    include <arm_neon.h>
+#    ifndef CGLM_NEON_FP
+#      define CGLM_NEON_FP 1
+#    endif
+#    ifndef CGLM_SIMD_ARM
+#      define CGLM_SIMD_ARM
+#    endif
+#  endif
+
+#else /* non-windows */
+#  if defined(__ARM_NEON) || defined(__ARM_NEON__)
+#    include <arm_neon.h>
+#    if defined(__ARM_NEON_FP) || defined(__ARM_FP)
+#      define CGLM_NEON_FP 1
+#    endif
+#    ifndef CGLM_SIMD_ARM
+#      define CGLM_SIMD_ARM
+#    endif
+#  endif
+#endif
+
+/* WebAssembly */
+#if defined(__wasm__) && defined(__wasm_simd128__)
+#  ifndef CGLM_SIMD_WASM
+#    define CGLM_SIMD_WASM
+#  endif
+#endif
+
+#if defined(CGLM_SIMD_x86) || defined(CGLM_SIMD_ARM) || defined(CGLM_SIMD_WASM)
+#  ifndef CGLM_SIMD
+#    define CGLM_SIMD
+#  endif
+#endif
+
+#if defined(CGLM_SIMD_x86) && !defined(CGLM_SIMD_WASM)
+#  include "x86.h"
+#endif
+
+#if defined(CGLM_SIMD_ARM)
+#  include "arm.h"
+#endif
+
+#if defined(CGLM_SIMD_WASM)
+#  include "wasm.h"
+#endif
+
+#endif /* cglm_intrin_h */
-- 
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