How does your programming language handle “minus zero” (-0.0)?

Re:How does your programming language handle “minus zero” (-... by pfsalter on Friday March 05, 2021 @10:19AM (#26357745)

PHP just refuses to divide by zero:

    php > $minus_zero = -0.0;
    php > $plus_zero = +0.0;
    php > var_dump(1.0 / $minus_zero);
    PHP Warning:  Uncaught DivisionByZeroError: Division by zero in php shell code:1

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Re:How does your programming language handle “minus zero” (-... by bakje on Friday March 05, 2021 @10:45AM (#26358093)

Actually as shown by your output it doesn't completely refuse to divide by zero, a warning means that execution continued.

The result of that division is a float with a value of -INF, INF being a constant that PHP treats as infinite.

But as of PHP 8 dividing by zero causes a fatal error and execution is halted.

This site is really good for comparing results in different PHP versions: https://3v4l.org/9Tl1I

I actually wasn't aware that PHP had an INF contant but seeing the warning in your output prompted me to dig a little bit deeper :)

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