Das Asterisk Buch

MATH(Zahl1 Operator Zahl2[,Ergebnistyp])

Berechnet einfache mathematische Ausdrücke. Mögliche Operatoren sind: +, -, /, *, <, >, <=, >=, ==, % (Modulo). Ergebnistyp: f, float (Fließkommazahl, Default), i, int (Ganzzahl), h, hex (Wert im Hexadezimal-System), c, char (Byte).

; 3*8 als Ganzzahl berechnen:
exten => 123,1,Set(i=${MATH(3*8,int)})

Asterisk-Versionen: 

————————| 1.2 |————————| 1.4 |————————| 1.6 |————————

Interner Hilfetext zu dieser Funktion in Asterisk 1.4: 

  -= Info about function 'MATH' =-

[Syntax]
MATH(<number1><op><number 2>[,<type_of_result>])

[Synopsis]
Performs Mathematical Functions

[Description]
Perform calculation on number 1 to number 2. Valid ops are:
    +,-,/,*,%%%%,<,>,>=,<=,==
and behave as their C equivalents.
<type_of_result> - wanted type of result:
        f, float - float(default)
        i, int - integer,
        h, hex - hex,
        c, char - char
Example: Set(i=${MATH(123%%%%16,int)}) - sets var i=11

Differenz des internen Hilfetexts von Asterisk 1.2 zu 1.4: — keine —

Differenz des internen Hilfetexts von Asterisk 1.4 zu 1.6: 

--- in Asterisk 1.4
+++ in Asterisk 1.6
@@ -1,14 +1,14 @@
     -= Info about function 'MATH' =-

   [Syntax]
-  MATH(<number1><op><number 2>[,<type_of_result>])
+  MATH(<number1><op><number2>[,<type_of_result>])

   [Synopsis]
   Performs Mathematical Functions

   [Description]
-  Perform calculation on number 1 to number 2. Valid ops are:
-      +,-,/,*,%%%%,<,>,>=,<=,==
+  Perform calculation on number1 to number2. Valid ops are:
+      +,-,/,*,%%%%,<<,>>,^,AND,OR,XOR,<,>,>=,<=,==
   and behave as their C equivalents.
   <type_of_result> - wanted type of result:
           f, float - float(default)