Class: Math

• Inheritance
• Description
• Class protocol
  • constants
  • min & max
  • misc math
  • queries
  • trigonometric

Inheritance:

   Object
   |
   +--Math

Package:

stx:libjavascript

Category:

Languages-JavaScript-Framework

Version:

rev: 1.8 date: 2019/06/10 15:12:49

user: cg

file: Math.st directory: libjavascript

module: stx stc-classLibrary: libjavascript

Description:

Simulates the javascript Math protocol

allows for
    Math.sin(foo)
or
    Math.atan2(a,b)

Class protocol:

 E

Eulers constant, the base of the natural logarithm; approx 2.718

usage example(s):

JavaScriptParser evaluate:'Math.E;'

 LN10

natural logarithm of 10, approx 2.302

usage example(s):

JavaScriptParser evaluate:'Math.LN10;'

 LN2

natural logarithm of 2, approx 0.693

usage example(s):

JavaScriptParser evaluate:'Math.LN2;'

 LOG10E

base 10 logarithm of E; approx. 0.434

usage example(s):

JavaScriptParser evaluate:'Math.LOG10E;'

 LOG2E

base2 logarithm of E; approx. 1.442

usage example(s):

JavaScriptParser evaluate:'Math.LOG2E;'

 NEGATIVE_INFINITY

-inf

usage example(s):

JavaScriptParser evaluate:'Math.NEGATIVE_INFINITY;'

 NaN

not a number

usage example(s):

JavaScriptParser evaluate:'Math.NaN;'

 PI

pi; approx 3.14159

usage example(s):

JavaScriptParser evaluate:'Math.PI;'

 POSITIVE_INFINITY

+Inf

usage example(s):

JavaScriptParser evaluate:'Math.POSITIVE_INFINITY;'

 SQRT1_2

square root of 1/2; approx 0.707

usage example(s):

JavaScriptParser evaluate:'Math.SQRT1_2;'

 SQRT2

square root of 2; approx. 1.414

usage example(s):

JavaScriptParser evaluate:'Math.SQRT2;'

 max

returns the largest of 0 to 6 args

usage example(s):

JavaScriptParser evaluate:'Math.max();' JavaScriptParser evaluate:'Math.max(1);' JavaScriptParser evaluate:'Math.max(10,2);' JavaScriptParser evaluate:'Math.max(10,5,20);'

 max: n1

returns the largest of 0 to 6 args

 max: n1 _: n2

returns the largest of 0 to 6 args

 max: n1 _: n2 _: n3

returns the largest of 0 to 6 args

 max: n1 _: n2 _: n3 _: n4

returns the largest of 0 to 6 args

 max: n1 _: n2 _: n3 _: n4 _: n5

returns the largest of 0 to 6 args

 max: n1 _: n2 _: n3 _: n4 _: n5 _: n6

returns the largest of 0 to 6 args

 min

returns the smallest of 0 to 6 args

usage example(s):

JavaScriptParser evaluate:'Math.min();' JavaScriptParser evaluate:'Math.min(1);' JavaScriptParser evaluate:'Math.min(10,2);' JavaScriptParser evaluate:'Math.min(10,5,20);'

 min: n1

returns the smallest of 0 to 6 args

 min: n1 _: n2

returns the smallest of 0 to 6 args

 min: n1 _: n2 _: n3

returns the smallest of 0 to 6 args

 min: n1 _: n2 _: n3 _: n4

returns the smallest of 0 to 6 args

 min: n1 _: n2 _: n3 _: n4 _: n5

returns the smallest of 0 to 6 args

 min: n1 _: n2 _: n3 _: n4 _: n5 _: n6

returns the smallest of 0 to 6 args

 abs: aNumber

returns the absolute value of a number

 binco: n _: k

returns the binomialcoefficient C(n,k) (n over k, choose k from n)

 ceil: aNumber

returns the smallest integer greater than or equal to aNumber

 exp: aNumber

returns E^aNumber

 fac: aNumber

returns the factorial of aNumber

 floor: aNumber

returns the largest integer less than or equal to aNumber

 gcd: a _: b

returns the greatest common divisor of a and b

 ln: aNumber

returns the natural logarithm of aNumber.

 log10: aNumber

returns the log base 10 of aNumber.

 log: aNumber

returns the log base E of aNumber.
ATTENTION:
JS log is a base E log
ST log is a base 10 log (use ln for base E)
in JS, better use log10 to make things explicit.

 pow: base _: exp

returns base^exp

 random

returns a pseudo random number between 0 and 1

usage example(s):

JavaScriptParser evaluate:'Math.random();'

 random: min _: max

returns a pseudo random number between min and max

 randomInteger: min _: max

returns a pseudo random number between min and max

 round: aNumber

returns the value of aNumber rounded to the nearest integer

 sqrt: aNumber

returns the square root of aNumber

 isUtilityClass

 acos: aNumber

returns the arccosine (in radians) of a number

 asin: aNumber

returns the arcsine (in radians) of a number

 atan2: x _: y

returns the arctangent of the quotient of its arguments (in radians)

 atan: aNumber

returns the arctangent (in radians) of a number

 cos: aNumber

returns the cosine of a number (given in radians)

 degreesToRadians: aNumber

converts degrees to radians

 radiansToDegrees: aNumber

converts radians to degrees

 sin: aNumber

returns the sine of a number (given in radians)

 tan: aNumber

returns the tangent of a number (given in radians)