Extracted from Pike v7.8 release 866 at 2016-11-06.
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Math
Math.Angle

Methods
 __hash()
 `%()
 `*()
 `+()
 `-()
 `/()
 `<()
 `==()
 `>()
 about_face()
 add()
 cast()
 clone_me()
 cos()
 create()
 degree()
 format_dms()
 get()
 gon()
 left_face()
 minute()
 normalize()
 rad()
 right_face()
 second()
 set()
 set_degree()
 set_dms()
 set_gon()
 set_rad()
 set_streck()
 sin()
 streck()
 subtract()
 tan()
previousMath.Angle()->`>()
Math.Angle()->add()next

Method Math.Angle()->about_face()

Method about_face

void about_face()

Description

Turns the direction of the angle half a turn. Equal to add(180,"deg").