On Sun, 19 Jun 2011, Rob Dixon wrote:
On 19/06/2011 14:07, Patrick Dupre wrote:
Hello,
I need to convert the result of an aritmetic operation on 2
bignum into a "normal" float (ie double)
I did not find a way to do this.
no bignum ;
my $res = $A - $B ;
gives me always a bignum ($res) if $A and $B are bignum.
Hey Patrick
I suggest you convert the values to strings, which will force them to be
converted to normal floats before the arithmetic is done.
no bignum ;
my $res = $A->bstr - $B->bstr;
There is not option like (double) $res ?
It is also probably better to use Math::BigFloat instead of bignum, so
that you can better control which variables are big floats and which are
normal.
I also wonder why you want to convert big floats into normal ones? The
only reason I can think of is to improve execution speed.
Not really, I have a big application calling c procedures
and I do not want to make changes with are not usuable and even tricky.
However, I need to make a couple of operations in BigFloat.
--
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Patrick DUPRÉ | |
Department of Chemistry | | Phone: (44)-(0)-1904-434384
The University of York | | Fax: (44)-(0)-1904-432516
Heslington | |
York YO10 5DD United Kingdom | | email: patrick.du...@york.ac.uk
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