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NNTP-Posting-Date: Wed, 28 Oct 2026 06:19:25 +0000
From: steve g <Sgonedes1977@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: .5 against 0.5f
References: <11bpvs7$1e6kc$2@dont-email.me> <11bqnvh$1np7s$1@dont-email.me> <11bqo8h$1o2l4$2@dont-email.me> <11bqsef$1pnhi$1@dont-email.me> <11bqt88$1q9r2$1@dont-email.me>
Date: Wed, 28 Oct 2026 02:19:24 -0400
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Xref: csiph.com comp.lang.c:403685

fir <profesor.fir@gmail.com> writes:


> float x=a*1.5;
>
> it also says in such above case the multiplication would be in double then
> converted to float - bout for me its hard to belive

you could use ratios.

> (i some cases ai not quite tells the truth and i cant easily validate it)

Hahha... TMS?

> it also not gives stright answe if pushed - it says more liek id depends on
> flags, compiler may or may
>
> so this is no good answer

Welcome to programming :)

> (and i asume there may be soem simple answer here i dont know
> (and i suspect its rather - no it will generate float no silly conversions

Unlikely.

> if no that would be bad)

Try lisp, you can use fractions, ratios, very large doubles. It is
somewhat slow with floating point usually. Ratios I like.  1/100 - that
is it.

If you want real speed with numbers I would look into fortran (actually
I would not).

 -> (numerator (/ 1 100)) => 1
 -> (denominator (/ 1 100) => 100