NEON optimization

vitaut · vitaut · commit f2a6c7996887 · 2026-01-11T07:43:31.000-08:00
diff --git a/zmij.cc b/zmij.cc
@@ -502,8 +502,8 @@ auto write_significand17(char* buffer, uint64_t value) noexcept -> char* {
   struct to_string_constants {
     uint64_t mul_const = 0xabcc77118461cefd;
     uint64_t hundred_million = 100000000;
-    int32_t multipliers32[4] = {div10k_sig, neg10k, div100_sig << 12, neg100};
-    int16_t multipliers16[8] = {0xce0, neg10};
+    int32x4_t multipliers32 = {div10k_sig, neg10k, div100_sig << 12, neg100};
+    int16x8_t multipliers16 = {0xce0, neg10};
   };
 
   static const to_string_constants constants;
