[ новости /+++ | форум | теги | ]

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









Поиск по тексту MAN-ов: 


























Партнёры:










Хостинг:










Закладки на сайте

Проследить за страницей


Created 1996-2024 by Maxim Chirkov

Добавить, Поддержать, Вебмастеру