Math::BigFloat

Math::BigFloat(3)      Perl Programmers Reference Guide      Math::BigFloat(3)



NAME
       Math::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 inbedded 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













3rd Berkeley Distribution    perl 5.005, patch 02            Math::BigFloat(3)