MDK::Common::Math

NAME
SYNOPSIS
EXPORTS
OTHER
SEE ALSO

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NAME

MDK::Common::Math − miscellaneous math functions

SYNOPSIS

use MDK::Common::Math qw(:all);

EXPORTS

$PI

the well-known constant

even( INT )
odd( INT )

is the number even or odd?

sqr( FLOAT )

sqr(3) gives 9

sign( FLOAT )

returns a value in { −1, 0, 1 }

round( FLOAT )

“round(1.2)” gives 1, “round(1.6)” gives 2

round_up( FLOAT, INT )

returns the number rounded up to the modulo: “round_up(11,10)” gives 20

round_down( FLOAT, INT )

returns the number rounded down to the modulo: “round_down(11,10)” gives 10

divide( INT, INT )

integer division (which is lacking in perl). In array context, also returns the remainder: “($a, $b) = divide(10,3)” gives “$a is 3” and “$b is 1”

min( LIST )
max( LIST )

returns the minimum/maximum number in the list

or_( LIST )

is there a true value in the list?

and_( LIST )

are all values true in the list?

sum( LIST )
product( LIST )

returns the sum/product of all the element in the list

factorial( INT )

factorial(4) gives 24 (4*3*2)

OTHER

the following functions are provided, but not exported:
factorize( INT )

“factorize(40)” gives “([2,3], [5,1])” as 40 = 2^3 + 5^1

decimal2fraction( FLOAT )

“decimal2fraction(1.3333333333)” gives “(4, 3)” ($PRECISION is used to decide which precision to use)

poly2(a,b,c)

Solves the a*x2+b*x+c=0 polynomial: “poly2(1,0,−1)” gives “(1, −1)”

permutations(n,p)

A(n,p)

combinaisons(n,p)

C(n,p)

SEE ALSO

MDK::Common

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