Languages Numeric Types

C & C++ References:

• http://home.att.net/~jackklein/c/inttypes.html
• http://www.space.unibe.ch/comp_doc/c_manual/C/CONCEPT/data_types.html

C Trivia:

• In C, long is both modifier and data type.
• Long Long Int is not available in C++
• <limits.h> header contains max & min information of numeric types.

C & C++ Numerical Types:

• ShortInt — 2 bytes and 16 bits
• Int — 2 bytes and 32 bits
• Long Int — 2 bytes and 32 bits
• Long Long Int (C only) — 4 bytes and 64 bits
• Double — 64 bits

CPython Reference:

• http://docs.python.org/lib/typesnumeric.html

CPython Numerical Types:

• Int ( use Long Int in C ) — 32 bits precision.
• Float (use Double in C) — 64 bits precision.
• Long — Unlimited precision.
• Complex (use Double in C)

Java References:

• http://www.cafeaulait.org/course/week2/02.html
• http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Number.html

Java Primitive Numerical Types:

• Short — 2 bytes and 16 bits
• Int — 2 bytes and 32 bits
• Long — 8 bytes
• Float — 4 bytes
• Double — 8 bytes

Java Other Numerical Types:

• BigInt
• BigDecimal

PHP References:

• http://us2.php.net/manual/en/function.intval.php
• http://us2.php.net/manual/en/function.settype.php

PHP Trivia:

• There’s no real concept of numeric data type in PHP (PHP 4.2 and newer supporters can argue me on this).
• You don’t set date type on numeric variables, PHP determines data type for you.
• 32 bit systems have a maximum signed integer range of -2147483648 to 2147483647.
• The maximum signed integer value for 64 bit systems is 9223372036854775807.

PHP Numerical “Types”:

• bool
• integer
• float

Perl References:

• http://perldoc.perl.org/functions/int.html
• http://perldoc.perl.org/perlnumber.html

Perl Numerical Types:

• Integer
• Float
• Decimal

Perl Trivia:

• Decimal strings may have an exponential notation part, as in "12.34e-56".