use hex literals in xxhash and ryu

Author: yj-qin

bytes/xxhash.mbt

@@ -14,15 +14,15 @@
 
 // https://github.com/Cyan4973/xxHash/blob/dev/doc/xxhash_spec.md#xxh32-algorithm-description
 
-let gPRIME1 = -1640531535
+let gPRIME1 = 0x9E3779B1
 
-let gPRIME2 = -2048144777
+let gPRIME2 = 0x85EBCA77
 
-let gPRIME3 = -1028477379
+let gPRIME3 = 0xC2B2AE3D
 
-let gPRIME4 = 668265263
+let gPRIME4 = 0x27D4EB2F
 
-let gPRIME5 = 374761393
+let gPRIME5 = 0x165667B1
 
 fn xxhash32(input : Bytes, seed : Int) -> Int {
   let len = input.length()

double/ryu.mbt

@@ -161,9 +161,9 @@ let gDOUBLE_POW5_INV_SPLIT2 : Array[Int64] = [
 ]
 
 let gPOW5_INV_OFFSETS : Array[Int] = [
-  1414808916, 67458373, 268701696, 4195348, 1073807360, 1091917141, 1108, 65604,
-  1073741824, 1140850753, 1346716752, 1431634004, 1365595476, 1073758208, 16777217,
-  66816, 1364284433, 89478484, 0,
+  0x54544554, 0x04055545, 0x10041000, 0x00400414, 0x40010000, 0x41155555, 0x00000454,
+  0x00010044, 0x40000000, 0x44000041, 0x50454450, 0x55550054, 0x51655554, 0x40004000,
+  0x01000001, 0x00010500, 0x51515411, 0x05555554, 0x00000000,
 ]
 
 let gDOUBLE_POW5_SPLIT2 : Array[Int64] = [
@@ -176,9 +176,9 @@ let gDOUBLE_POW5_SPLIT2 : Array[Int64] = [
 ]
 
 let gPOW5_OFFSETS : Array[Int] = [
-  0, 0, 0, 0, 1073741824, 1500076437, 1431590229, 1448432917, 1091896580, 1079333904,
-  1146442053, 1146111296, 1163220304, 1073758208, -1773927360, 1431721317, 1413824581,
-  1075134801, 1431671125, 1363170645, 261,
+  0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x40000000, 0x59695995, 0x55545555,
+  0x56555515, 0x41150504, 0x40555410, 0x44555145, 0x44504540, 0x45555550, 0x40004000,
+  0x96440440, 0x55565565, 0x54454045, 0x40154151, 0x55559155, 0x51405555, 0x00000105,
 ]
 
 let gDOUBLE_POW5_TABLE : Array[Int64] = [

int64/xxhash.mbt

@@ -13,15 +13,15 @@
 // limitations under the License.
 
 // Not needed for 8 bytes data
-// let gPRIME1 = -1640531535
+// let gPRIME1 = 0x9E3779B1
 
-let gPRIME2 = -2048144777
+let gPRIME2 = 0x85EBCA77
 
-let gPRIME3 = -1028477379
+let gPRIME3 = 0xC2B2AE3D
 
-let gPRIME4 = 668265263
+let gPRIME4 = 0x27D4EB2F
 
-let gPRIME5 = 374761393
+let gPRIME5 = 0x165667B1
 
 // https://github.com/Cyan4973/xxHash/blob/dev/doc/xxhash_spec.md#xxh32-algorithm-description
 // For a more readable version, see bytes/xxhash.mbt