


Math::BigFloat(3pPerl Programmers Reference GuiMath::BigFloat(3p)


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 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











29/Apr/1999            perl 5.005, patch 03                     1





Math::BigFloat(3pPerl Programmers Reference GuiMath::BigFloat(3p)



























































29/Apr/1999            perl 5.005, patch 03                     2


