Getting C2760 syntax error: unexpected token 'int', expected 'expression' for std::max(...)

Question

I am trying to build a DLL with C exports for the MathGeoLib library to be consumed from C#.

The code I've written so far:

#include "stdafx.h"
#include "MathGeoLib/MathGeoLib.h"

OBB* OptimalEnclosingOBB(const vec* pointArray, int numPoints)
{
    const auto obb1 = OBB::OptimalEnclosingOBB(pointArray, numPoints);
    const auto obb2 = new OBB(obb1);
    return obb2;
}

The stdafx.h file:

#pragma once
#include "targetver.h"
#define WIN32_LEAN_AND_MEAN             // Exclude rarely-used stuff from Windows headers
// Windows Header Files
#include <windows.h>

But when I compile, I get the following error even though I defined NOMINMAX:

1>c:\build\mathgeolib\include\mathgeolib\geometry\quadtree.inl(699): error C2760: syntax error: unexpected token 'int', expected 'expression'

This is the line where Visual Studio 2017 is choking on:

https://github.com/juj/MathGeoLib/blob/master/src/Geometry/QuadTree.inl#L699

template<typename T>
int QuadTree<T>::NumNodes() const
{
    return std::max<int>(0, nodes.size() - 3); // The nodes rootNodeIndex+1, rootNodeIndex+2 and rootNodeIndex+3 are dummy unused, since the root node is not a quadrant.
}

Question:

How can I fix this error ?

Please provide [mcve] in the question itself, and not hidden behind links. — Algirdas Preidžius, Jan 06 '19 at 22:03
it could be this: https://stackoverflow.com/questions/2789481/problem-calling-stdmax — kmdreko, Jan 06 '19 at 22:15
where did you define NOMINMAX . Before or after including windows.h — rsjaffe, Jan 06 '19 at 22:23
@kmdreko I've already defined `NOMINMAX` and it effectively worked out for previous errors, trying to encompass `std::max` with parenthesis didn't help at all, the only that works is to remove `` and it builds; however, I was hoping for a solution that wouldn't require to change the sources. — aybe, Jan 06 '19 at 22:23
Also see [#define NOMINMAX using std::min/max](https://stackoverflow.com/q/13416418/608639), [std::min gives error](https://stackoverflow.com/q/5004858/608639) and [Calling function with parenthesis around its name using C++](https://stackoverflow.com/q/19811452/608639). — jww, Jan 06 '19 at 23:26

score 2 · Accepted Answer · answered Jan 06 '19 at 22:32

2

The line #include <algorithm> is required for use of std::max .

answered Jan 06 '19 at 22:32

M.M

138,810
21
208
365

Getting C2760 syntax error: unexpected token 'int', expected 'expression' for std::max(...)

1 Answers1