From 1c9a3088bf9e3af9b838437c9efb00b5d877eec9 Mon Sep 17 00:00:00 2001
From: Maya Warrier <maya.warrierm@gmail.com>
Date: Wed, 17 May 2023 02:35:16 -0400
Subject: [PATCH] Fix for VS 32-bit

---
 include/fast_float/ascii_number.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/include/fast_float/ascii_number.h b/include/fast_float/ascii_number.h
index e39fafc..ba6b0ef 100644
--- a/include/fast_float/ascii_number.h
+++ b/include/fast_float/ascii_number.h
@@ -69,7 +69,15 @@ uint64_t read8_to_u64(const UC *chars) {
 fastfloat_really_inline
 uint64_t simd_read8_to_u64(const __m128i data) {
 FASTFLOAT_SIMD_DISABLE_WARNINGS
-  return uint64_t(_mm_cvtsi128_si64x(_mm_packus_epi16(data, data)));
+  const __m128i packed = _mm_packus_epi16(data, data);
+#ifdef FASTFLOAT_64BIT
+  return uint64_t(_mm_cvtsi128_si64x(packed));
+#else
+  uint64_t value;
+  // Visual Studio + older versions of GCC don't support _mm_storeu_si64
+  _mm_storel_epi64(reinterpret_cast<__m128i*>(&value), packed);
+  return value;
+#endif
 FASTFLOAT_SIMD_RESTORE_WARNINGS
 }