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8.142. Math::BigFloat
Provides methods that permit use of
floating-point numbers of arbitrary length. The following apply to
all methods, except as noted:
The object $f remains
unchanged.
All methods except fcmp return a number string
(nstr) of the form
/[+-]\d+E[+-]\d+/, with embedded whitespace
ignored.
A return value of NaN indicates that either an
input parameter was "Not a Number"
or that an illegal operation was attempted.
A similar default scale value is computed for square roots.
| new |
$f = Math::BigFloat->new(string)
Creates a new object,
$f.
| fabs |
$f->fabs( )
Returns absolute value of
$f.
| fadd |
$f->fadd(nstr)
Returns sum of nstr and
$f.
| fcmp |
$f->fcmp(nstr)
Compares $f to
nstr. Returns -1,
0, or 1 depending on whether
$f is less than, equal
to, or greater than nstr, or
undef if nstr is not a
number.
| fdiv |
$f->fdiv(nstr[,n])
Returns $f divided by
nstr to nplaces. If scale (the number of digits) is
unspecified, division is computed to the number of digits given by:
max($div_scale, length(dividend)+length(divisor))
| ffround |
$f->ffround(n)
Returns $f rounded at
nth place.
| fmul |
$f->fmul(nstr)
Returns $f multiplied
by nstr.
| fneg |
$f->fneg( )
Returns negative of $f.
| fnorm |
$f->fnorm( )
Returns normalization of
$f.
| fround |
$f->fround(n)
Returns value of $frounded to n digits.
| fsqrt |
$f->fsqrt([n])
Returns square root of
$f to
n places.
| fsub |
$f->fsub(nstr)
Returns $f minus
nstr.
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| 8.141. locale |  | 8.143. Math::BigInt |
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