simd int and string parsing on aarch64

src/number_decoder.rs

@@ -85,7 +85,7 @@
                 json_err!(InvalidNumber, index)
             }
         } else {
             json_err!(EofWhileParsingValue, index)
         }
     }
 }
@@ -210,7 +210,7 @@
             let (chunk, new_index) = IntChunk::parse_big(data, index);
             match chunk {
                 IntChunk::Ongoing(value) => {
-                    big_value *= POW_10[new_index - index];
+                    big_value *= ONGOING_CHUNK_SIZE;
                     big_value += value;
                     index = new_index;
                 }
@@ -252,6 +252,11 @@
     10u64.pow(17),
 ];
 
+#[cfg(target_arch = "aarch64")]
+static ONGOING_CHUNK_SIZE: u64 = POW_10[16];
+#[cfg(not(target_arch = "aarch64"))]
+static ONGOING_CHUNK_SIZE: u64 = POW_10[17];
+
 pub(crate) enum IntChunk {
     Ongoing(u64),
     Done(u64),