Math_BigFloat
Math::BigFloat - Arbitrary length float math package
<![CDATA[
use Math::BogFloat;
$f = Math::BigFloat->new($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
]]>
All basic math operations are overloaded if you declare your big
floats as
<![CDATA[
$float = new Math::BigFloat "2.123123123123123123123123123123123";
]]>
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number format
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canonical strings have the form /[+-]\d+E[+-]\d+/ . Input values can
have inbedded whitespace.
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Error returns 'NaN'
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An input parameter was ``Not a Number'' or divide by zero or sqrt of
negative number.
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Division is computed to
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max($div_scale,length(dividend)+length(divisor)) digits by default.
Also used for default sqrt scale.
The current version of this module is a preliminary version of the
real thing that is currently (as of perl5.002) under development.
Mark Biggar