swirl
Guide to OmniMark 8   OmniMark home
docs home 
IndexConceptsTasksSyntaxLibrariesLegacy LibrariesErrors
 
      Other Library Functions  
function  

atan

 
 

Library: Trigonometry (OMTRIG) legacy
Include: omtrig.xin
Return type: OMX

Returns: The arc tangent of a floating point number.


Declaration

define external float function
     atan value float x


Purpose

Use atan to calculate, in radians, the arc tangent of a floating point number. (The arc tangent is the inverse of the tangent.) This trigonometric function works the same way as its equivalent in the C math library.

Example:

  include "omtrig.xin"
  process
     local float x initial {90}
     local float atan-value
     set atan-value to atan x
     output "Arc tangent of x where x = " 
         || "d" % x 
         || " is "
         || "d" % atan-value
         || "%n"
  ; Output: "Arc tangent of x where x = 90 is 1.559685672897289"

        Other Library Functions
   acos
   asin
   atan
   atan2
   cos
   cosh
   hypot
   sin
   sinh
   tan
   tanh
 
 

Top [ INDEX ] [ CONCEPTS ] [ TASKS ] [ SYNTAX ] [ LIBRARIES ] [ LEGACY LIBRARIES ] [ ERRORS ]

OmniMark 8.2.0 Documentation Generated: March 13, 2008 at 3:27:39 pm
If you have any comments about this section of the documentation, please use this form.

Copyright © Stilo International plc, 1988-2008.