Memory.readFloat returning a string but Memory.writeFloat not able to use a string

[wwhurley]

I'm trying to overwrite a section in memory that is defined as a Float, but it appears to be a 64-bit signed float. Using Memory.readFloat() I get values like -150525991776673600000 as a string. Then I'm attempting to use Memory.writeFloat() to overwrite it with a value like -7728003924733680089 but I get an error that it expects a number. Unfortunately those numbers are too big to be correctly represented using JavaScript floats. I've tried using Memory.readS64() and Memory.readLong() to make use of the Int64 value but I don't get correct values. Is there any way to prepare a value to be written in that fashion?

[oleavr]

A 64-bit float is a double, so you want to use .readDouble() / .writeDouble(). The Memory.{read,write}*() APIs are deprecated btw, so use methods on NativePointer instead. (Also, Memory.readFloat() returns a number, not a string.)

For dealing with 64-bit integers, the S64/U64 APIs accept Int64 and UInt64 values, which can be constructed from a string. (To avoid loss of precision, as JavaScript numbers are backed by double.)

[wwhurley]

That's a little strange. Maybe it's because I was previously on 12.6 and just updated to 12.8. Is it possible to use writeDouble() to use a BigInt or something that can hold a larger value than the JavaScript float? I'm trying to write -7728003924733680089 which after converting to a number in JavaScript comes out as -7728003787486396000