diff options
| -rw-r--r-- | lib/pure/hashes.nim | 15 | ||||
| -rw-r--r-- | lib/std/private/jsutils.nim | 4 |
2 files changed, 14 insertions, 5 deletions
diff --git a/lib/pure/hashes.nim b/lib/pure/hashes.nim index 7ac62174c..3cf0a8f82 100644 --- a/lib/pure/hashes.nim +++ b/lib/pure/hashes.nim @@ -141,13 +141,18 @@ when defined(js): res = hiXorLoJs(hiXorLoJs(P0, x xor P1), P58) cast[Hash](toNumber(wrapToInt(res, 32))) - template asBigInt(num: float): JsBigInt = + template toBits(num: float): JsBigInt = let x = newArrayBuffer(8) y = newFloat64Array(x) - z = newBigUint64Array(x) - y[0] = num - z[0] + if hasBigUint64Array(): + let z = newBigUint64Array(x) + y[0] = num + z[0] + else: + let z = newUint32Array(x) + y[0] = num + big(z[0]) + big(z[1]) shl big(32) proc hashWangYi1*(x: int64|uint64|Hash): Hash {.inline.} = ## Wang Yi's hash_v1 for 64-bit ints (see https://github.com/rurban/smhasher for @@ -237,7 +242,7 @@ proc hash*(x: float): Hash {.inline.} = when not defined(js): result = hashWangYi1(cast[Hash](y)) else: - result = hashWangYiJS(asBigInt(y)) + result = hashWangYiJS(toBits(y)) # Forward declarations before methods that hash containers. This allows # containers to contain other containers diff --git a/lib/std/private/jsutils.nim b/lib/std/private/jsutils.nim index 296533a49..47a6caa2b 100644 --- a/lib/std/private/jsutils.nim +++ b/lib/std/private/jsutils.nim @@ -16,5 +16,9 @@ when defined(js): func `[]`*(arr: BigUint64Array, i: int): JsBigInt {.importjs: "#[#]".} func `[]=`*(arr: Float64Array, i: int, v: float) {.importjs: "#[#] = #".} + proc hasJsBigInt*(): bool = asm """`result` = typeof BigInt != 'undefined'""" + + proc hasBigUint64Array*(): bool = + asm """`result` = typeof BigUint64Array != 'undefined'""" |