Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

<math.h> error in Microsoft Visual C++

Posted on 2008-06-22
4
Medium Priority
?
3,414 Views
Last Modified: 2013-11-26
I've created a header file which contains lines like this :

Value = 1*pow(10,13) + 3 * pow(10.0,4) , where Value is an unsigned long long.

The header file was working perfectly on Borland C++ Builder 6. I've tried to run it using Microsoft Visual Studio 2008,(Visual C++) and i get errors like this:

c:\my documents\visual studio 2008\projects\chrysaor\chrysaor\File2.h(168) : error C2668: 'pow' : ambiguous call to overloaded function
        C:\Program Files\Microsoft Visual Studio 9.0\VC\include\math.h(575): could be 'long double pow(long double,int)'
        C:\Program Files\Microsoft Visual Studio 9.0\VC\include\math.h(527): or       'float pow(float,int)'
        C:\Program Files\Microsoft Visual Studio 9.0\VC\include\math.h(489): or       'double pow(double,int)'
        while trying to match the argument list '(int, int)'

Why this happens and how do I fix it?

Thanks a lot.
0
Comment
Question by:Chrysaor
  • 2
4 Comments
 
LVL 3

Accepted Solution

by:
sistemu earned 600 total points
ID: 21841015
Hi
Try using:
Value = 1*pow(10.0,13) + 3 * pow(10.0,4)

OR:
Value = 1*pow((double)10,13) + 3 * pow((double)10.0,4)

Function pow has 3 overloads:
~ long double pow(long double,int)
~ float pow(float,int)
~ double pow(double,int)
but either one corresponds to the way you call them.
0
 
LVL 11

Expert Comment

by:cup
ID: 21841625
Since your result is a long long, just to be safe, make the 1 and 3 1LL and 3LL respectively.
0
 
LVL 11

Expert Comment

by:cup
ID: 21841696
Since your result is a long long, just to be safe, make the 1 and 3 1LL and 3LL respectively.
0
 
LVL 7

Assisted Solution

by:johnnash1180
johnnash1180 earned 600 total points
ID: 21845157
Hmmmm..
The following may help.

long double Value = 1LL*pow(10.0f,13) + 3LL * pow(10.0f,4);

The complete documentation of pow function at the following URL:
http://msdn.microsoft.com/en-us/library/dt5dakze(VS.71).aspx

Nash J
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
Hello there! As a developer I have modified and refactored the unit tests which was written by fellow developers in the past. On the course, I have gone through various misconceptions and technical challenges when it comes to implementation. I would…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.
Suggested Courses

916 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question