Idiv()

From TinyMUX
Jump to: navigation, search

Description

FUNCTION: 20px-Function.png idiv(number1, number2)

Returns the integer quotient from dividing number1 by number.

However, integer division for the case where either integer1 or integer2 is negative is defined in a specific way -- by choosing the smallest integer that is greater than or equal to the algebraic quotient. If integer1 and integer2 are the same sign, then idiv() and floordiv() are equivalent.

For example, division of -9 by 5 would give -1 by this definition instead of -2. idiv() would return -1. floordiv() would return -2.


idiv(x,y)*y + remainder(x,y) ==> x


Related Topics: iadd(), imul(), isub(), fdiv(), floordiv(), fmod(), mod(), remainder().

Examples

> say idiv(15,3)
You say "5"
> say idiv(16,3)
You say "5"
> say idiv(17,3)
You say "5"
> say idiv(18,3)
You say "6"
> say idiv(-17,3)
You say "-5"

Server Differences

On TinyMUX, the built-in function idiv() is aliased to div(), but on PennMUSH and TinyMUSH, the built-in function is div(). TinyMUX support 64-bit integers on both 32-bit and 64-bit platforms. PennMUSH and TinyMUSH support the platform's native integer size (either 32-bit or 64-bit).

Use div() to obtain the same behavior across all three servers.