coffee/fast_float
1
0
Fork 0
mirror of https://github.com/fastfloat/fast_float.git synced 2025-12-06 16:56:57 +08:00
Code Issues Packages Projects Releases Wiki Activity

* Upgrade manually vectorized code to support SSE4.2.

Browse Source
This commit is contained in:
IRainman 2025-10-22 00:44:29 +03:00
parent 58b5dc04c3
commit f757eb45a2
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
include/fast_float/ascii_number.h
View File

@ -10,11 +10,11 @@
#include "float_common.h"
#ifdef FASTFLOAT_SSE2
#if defined(FASTFLOAT_SSE42)
#include <nmmintrin.h> // SSE4.2 intrinsics
#elif defined(FASTFLOAT_SSE2)
#include <emmintrin.h>
#endif
#ifdef FASTFLOAT_NEON
#elif defined(FASTFLOAT_NEON)
#include <arm_neon.h>
#endif
@ -76,7 +76,7 @@ fastfloat_really_inline uint64_t simd_read8_to_u64(__m128i const &data) {
FASTFLOAT_SIMD_DISABLE_WARNINGS
// _mm_packus_epi16 is SSE4.1+, converts 8×u16 → 8×u8
__m128i const packed = _mm_packus_epi16(data, data);
#ifdef FASTFLOAT_64BIT
#ifdef FASTFLOAT_SSE42
return static_cast<uint64_t>(_mm_cvtsi128_si64(packed));
#else
uint64_t value;
@ -169,7 +169,7 @@ simd_parse_if_eight_digits_unrolled(char16_t const *chars,
__m128i const data =
_mm_loadu_si128(reinterpret_cast<__m128i const *>(chars));
#ifdef FASTFLOAT_64BIT
#ifdef FASTFLOAT_SSE42
// --- Digit range check using SSE4.2 comparisons ---
// Validate: '0' (0x30) ≤ x ≤ '9' (0x39)
const __m128i ascii0 = _mm_set1_epi16(u'0');
@ -197,8 +197,8 @@ simd_parse_if_eight_digits_unrolled(char16_t const *chars,
return true;
} else
return false;
FASTFLOAT_SIMD_RESTORE_WARNINGS
#endif
FASTFLOAT_SIMD_RESTORE_WARNINGS
#elif defined(FASTFLOAT_NEON)
FASTFLOAT_SIMD_DISABLE_WARNINGS
uint16x8_t const data = vld1q_u16(reinterpret_cast<uint16_t const *>(chars));