MDK::Common::Math
Section: User Contributed Perl Documentation (3)
Updated: 2014-01-24
Page Index
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