[Bug]: Inconsistent results when rounding negative values

[oskostenko]

Contact Details

No response

Compiler version

v1.18.5

What happened?

Negative variables are rounded downwards, while negative contstants are rounded upwards.

dim   var_neg   as fixed = -1.5
const const_neg as fixed = -1.5

print cast(integer, var_neg)    ' -2
print cast(integer, const_neg)  ' -1

The same results are observed with floats.

Error and Warning messages

Code of Conduct

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[boriel]

The correct behavior should be round towards 0 (IMHO) (round).
However when using INT the FP-Calc (ROM) truncates _towards -♾️).
In the case above, cast is calling the ROM FP-Calc. I will review this to see if I can improve it

[oskostenko]

Just to clarify, I don't mind if rounding is always towards negative infinity. It is not always convenient, but at least it is compatible with the way int function works in Sinclair Basic.

The only real problem here is that it works differently depending on whethere it is a variable or a constant.

BTW, the same results are when using int instead of cast.

dim   var_neg   as float = -1.5
const const_neg as float = -1.5

print int(var_neg)    ' -2
print int(const_neg)  ' -1