Math::BigFloat(3)Perl Programmers Reference GuidMath::BigFloat(3)NAMEMath::BigFloat - Arbitrary length float math package
SYNOPSIS
use Math::BigFloat;
$f = Math::BigFloat->new($string);
$f->fadd(NSTR) return NSTR addition
$f->fsub(NSTR) return NSTR subtraction
$f->fmul(NSTR) return NSTR multiplication
$f->fdiv(NSTR[,SCALE]) returns NSTR division to SCALE places
$f->fneg() return NSTR negation
$f->fabs() return NSTR absolute value
$f->fcmp(NSTR) return CODE compare undef,<0,=0,>0
$f->fround(SCALE) return NSTR round to SCALE digits
$f->ffround(SCALE) return NSTR round at SCALEth place
$f->fnorm() return (NSTR) normalize
$f->fsqrt([SCALE]) return NSTR sqrt to SCALE places
DESCRIPTION
All basic math operations are overloaded if you declare
your big floats as
$float = new Math::BigFloat "2.123123123123123123123123123123123";
number format
canonical strings have the form /[+-]\d+E[+-]\d+/ .
Input values can have imbedded whitespace.
Error returns 'NaN'
An input parameter was "Not a Number" or divide by zero
or sqrt of negative number.
Division is computed to
max($div_scale,length(dividend)+length(divisor)) digits
by default. Also used for default sqrt scale.
BUGS
The current version of this module is a preliminary
version of the real thing that is currently (as of
perl5.002) under development.
AUTHOR
Mark Biggar
16/Sep/1999 perl 5.005, patch 03 1
Math::BigFloat(3)Perl Programmers Reference GuidMath::BigFloat(3)16/Sep/1999 perl 5.005, patch 03 2
