Can't find erf, erff, etc. compiling under 10.2

Question

I try to compile C++ Mathematical Expression Library (http://www.partow.net/programming/exprtk/index.html) by Arash Parto. Unfort. I do not succeed using 10.2. erf, erff, etc. are not found.

File try to compile:

#pragma hdrstop
#pragma argsused

#ifdef _WIN32
#include <tchar.h>
#else
  typedef char _TCHAR;
  #define _tmain main
#endif

#include <stdio.h>

#include <cmath>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <deque>
#include <fstream>
#include <iostream>
#include <numeric>
#include <string>
#include <vector>

#include "exprtk.hpp"


#ifdef exprtk_test_float32_type
typedef float numeric_type;
#else
typedef double numeric_type;
#endif

some defs...

int _tmain(int argc, _TCHAR* argv[])
{
   #define perform_test(Type,Number)                                               
   int result = 0;

   perform_test(numeric_type,00)

   #undef perform_test

   return result;
}

=======================================

Error log:

Project "D:_Entwicklung.KEL\exprtk_new\Project2.cbproj" (Build target(s)):

Target CreateProjectDirectories:
Creating directory ".\Win32\Debug".
Compiling C++ files...
Target MakeObjs:
Target TCCompile:
C:\Program Files (x86)\JomiTech\TwineCompile\mtbcc32.exe -ide102 -priority0 -files="D:_Entwicklung.KEL\exprtk_new\twfiles.@@@"
JomiTech TwineCompile 4.5 - Copyright JomiTech 2016. All Rights Reserved.
Compiling 1 files...
Embarcadero C++ 7.30 for Win32 Copyright (c) 1993-2017 Embarcadero Technologies, Inc.
d:_Entwicklung.KEL\exprtk_new\File2.cpp
File2.cpp: (0) 0 of 0
File2.cpp: (0) 368546 of 368546
d:_Entwicklung.KEL\exprtk_new\exprtk.hpp(1200,49): C++ error E2268: Call to undefined function 'erff'

After Remy Lebau's advice I tried the following

@RemyLebeau: Thanks for your advice. However I feel so useless.....

I tried (of course no **):

    **using namespace std;**
    #if (defined(_MSC_VER) && (_MSC_VER >= 1900)) || !defined(_MSC_VER)
    #define exprtk_define_erf(TT,impl)           \
    inline TT erf_impl(TT v) { return impl(v); } \

    exprtk_define_erf(      float,::erff)
    exprtk_define_erf(     double,::erf )
    exprtk_define_erf(long double,::erfl)
    #undef exprtk_define_erf
    #endif

==> [bcc32c Error] exprtk.hpp(1199): no member named 'erff' in the global namespace

Then I tried:

    #if (defined(_MSC_VER) && (_MSC_VER >= 1900)) || !defined(_MSC_VER)
    #define exprtk_define_erf(TT,impl)           \
    inline TT erf_impl(TT v) { return impl(v); } \

    exprtk_define_erf(      float,**std**::erff)
    exprtk_define_erf(     double,**std**::erf )
    exprtk_define_erf(long double,**std**::erfl)
    #undef exprtk_define_erf
    #endif

==> [bcc32c Error] exprtk.hpp(1198): no member named 'erff' in namespace 'std'

New file2.cpp

#pragma hdrstop
#pragma argsused

#ifdef _WIN32
#include <tchar.h>
#else
  typedef char _TCHAR;
  #define _tmain main
#endif

using namespace std;
#include "exprtk.hpp"

template <typename T>
void trig_function()
{
   typedef exprtk::symbol_table<T> symbol_table_t;
   typedef exprtk::expression<T>     expression_t;
   typedef exprtk::parser<T>             parser_t;
//
   const std::string expression_string =
                     "clamp(-1.0,sin(2 * pi * x) + cos(x / 2 * pi),+1.0)";

   T x;

   symbol_table_t symbol_table;
   symbol_table.add_variable("x",x);
   symbol_table.add_constants();

   expression_t expression;
   expression.register_symbol_table(symbol_table);

   parser_t parser;
   parser.compile(expression_string,expression);
//
   for (x = T(-5); x <= T(+5); x += T(0.001))
   {
      const T y = expression.value();
      printf("%19.15f\t%19.15f\n", x, y);
   }
}

int _tmain(int argc, _TCHAR* argv[])
{

   trig_function<double>();
   int result = 0;

   return result;
}

After modifiying in #include "exprtk.hpp":

           #if (defined(_MSC_VER) && (_MSC_VER >= 1900)) || !defined(_MSC_VER)
            #define exprtk_define_erf(TT,impl)           \
            inline TT erf_impl(TT v) { return impl(v); } \

//            exprtk_define_erf(      float,::erff)
            exprtk_define_erf(     double,::erf )
//            exprtk_define_erf(long double,::erfl)
            #undef exprtk_define_erf
            #endif

I get now: [ilink32 Error] Fatal: Exceeded memory limit for block Publics in module File2.cpp

Isn't it possible to add the code to produce the error? (if the code is too big to paste directly, you may also need to simplify the question.) — ITO Yosei, Sep 17 '20 at 12:54
@aekeller Attachments are not allowed here. Please [edit] your question to provide a [mcve] showing the minimum code needed to reproduce the error. — Remy Lebeau, Sep 17 '20 at 16:51
`erf`, `erff`, etc are C++11 math functions defined in ``. So, make sure the code in question has `#include `, and also that you are compiling the project with one of Embarcadero's [clang-based compilers](http://docwiki.embarcadero.com/RADStudio/en/Clang-enhanced_C%2B%2B_Compilers) that support C++11, not with the "classic" Borland compiler which doesn't. From the command-line shown, you are using TwineCompile, I don't know which of Embarcadero's compilers it invokes internally. — Remy Lebeau, Sep 17 '20 at 16:55
I switches off now TwineCompile, as well I do not use the "classic" Borland compiler anymore.... Get now: [bcc32c Error] exprtk.hpp(1200): no member named 'erff' in the global namespace — aekeller, Sep 17 '20 at 17:16
`exprtk.hpp` refers to `erff()` as `::erff`, but `` defines `erff()` in the `std` namespace, not in the global namespace. You could try adding `using namespace std;` or better `using std::erff;` to bring `std::erff()` into the global namespace. Or simply change the offending code to use `std::erff` instead of `::erff`. Same with `erf` and `erfl`. Or, if you really want to be fancy, `exprtk.hpp` uses `::erff` inside of a `exprtk_define_erf()` macro, so define a different version of that macro for Embarcadero's compiler that prefixes `::erff` with `std`. — Remy Lebeau, Sep 18 '20 at 00:01
@RemyLebeau: Thanks for your advice. However I feel so useless.... I tried to go after your advices ==> See my description in above. I still get **[bcc32c Error] exprtk.hpp(1198): no member named 'erff' in namespace 'std'** even using **using namespace std;** or using **exprtk_define_erf( float,std::erff)**. — aekeller, Sep 18 '20 at 06:50
I am one step further. I commented erff and erfl // exprtk_define_erf( float,::erff) exprtk_define_erf( double,::erf ) // exprtk_define_erf(long double,::erfl) Now it compiles, but does not link: [ilink32 Error] Fatal: Exceeded memory limit for block Publics in module File2.cpp My modiefied file2.cpp you can find above — aekeller, Sep 18 '20 at 08:30

Can't find erf, erff, etc. compiling under 10.2

File try to compile:

0 Answers0