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Date: Wed, 3 Apr 2019 14:34:27 +0200
In-Reply-To: <CAG9XoMQXpFkvT=pzqPA0QPe72YApqp1C8Mys6wEE5856TviKCg@mail.gmail.com>
Cc: PHP Internals <internals@lists.php.net>
To: Benjamin Morel <benjamin.morel@gmail.com>
References: <CAG9XoMQXpFkvT=pzqPA0QPe72YApqp1C8Mys6wEE5856TviKCg@mail.gmail.com>
Subject: Re: [PHP-DEV] PHP_FLOAT_MIN is positive
From: claude.pache@gmail.com (Claude Pache)

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> Le 3 avr. 2019 =C3=A0 11:51, Benjamin Morel <benjamin.morel@gmail.com> =
a =C3=A9crit :
>=20
> Hi internals,
>=20
> I just used PHP_FLOAT_MIN for the first time, and was surprised that =
it is
> the smallest **positive** number representable. Is this expected?
>=20
> This is unlike PHP_INT_MIN, which is the absolute smallest =
representable
> integer, and as such is negative:
>=20
> echo PHP_INT_MIN; // -9223372036854775808
> echo PHP_FLOAT_MIN; // 2.2250738585072E-308
>=20
> If it is intended, maybe the doc
> <https://www.php.net/manual/en/reserved.constants.php> should be clear
> about this, at the moment it is just:
>=20
> Smallest representable floating point number.
>=20
>=20
> Which is confusing IMO.
>=20
> Cheers,
> Ben

And in order to avoid further confusion, the constant ought to be =
renamed PHP_FLOAT_MIN_POSITIVE.

Rust named it correctly: =
https://doc.rust-lang.org/std/f64/constant.MIN_POSITIVE.html =
<https://doc.rust-lang.org/std/f64/constant.MIN_POSITIVE.html>

=E2=80=94Claude=

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