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  1. #1
    Join Date
    Dec 2010
    Posts
    907

    ceil function name collision.

    Code:
    cv::Size output_size
    	  (gallerycols * 2 * its[0].cols(), ceil(4 / gallerycols) * 2 * its[0].rows());
    
    Error	18	error C2668: 'ceil' : ambiguous call to overloaded function	E:\Jacky\Downloads\voronoi\voronoi\test_voronoi.cpp	207	1	voronoi
    I try to #include <cmath>
    and use std::ceil to no avail
    There are still function names clashing.
    Thanks
    Jack

  2. #2
    2kaud's Avatar
    2kaud is offline Super Moderator Power Poster
    Join Date
    Dec 2012
    Location
    England
    Posts
    7,822

    Re: ceil function name collision.

    Ceil() takes either a float or a double and returns either a float or a double. See http://msdn.microsoft.com/en-us/library/hh308218.aspx. Try
    Code:
    ceil((double)(4.0 / gallerycols)) * 2 * its[0].rows()
    You may need to cast the result to an int.
    All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!

    C++23 Compiler: Microsoft VS2022 (17.6.5)

  3. #3
    Join Date
    Dec 2010
    Posts
    907

    Re: ceil function name collision.

    Thanks, it works great now...
    Jack

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