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B.9. Mathematics

Perl can do just about any kind of
mathematics you
can dream up.

B.9.1. Advanced Math Functions

All of the basic mathematical functions
( square root,
cosine,
logarithm,
absolute
value, and many others) are available as built in functions; see the
perlfunc manpage for details. Some others (like
tangent or base-10 logarithm) are omitted, but those may be easily
created from the basic ones, or loaded from a simple module that does
so. (See the POSIX
module for many common math functions.)

B.9.2. Imaginary and Complex Numbers

Although the core of Perl doesn''t directly support them, there
are modules available for working with
complex numbers. These overload the
normal operators and functions, so that you can still multiply with
* and get a square root with
sqrt, even when using complex numbers. See the
Math::Complex module.

B.9.3. Large and High-Precision Numbers

You can do math with arbitrarily large


numbers with an arbitrary number of
digits of accuracy. For example, you could calculate the factorial of
two thousand, or determine to ten-thousand digits. See the
Math::BigInt and
Math::BigFloat modules.