error: ‘trunc’ is not a member of ‘std’

[ksdhans]

Attempting to use std::trunc() results in:
error: ‘trunc’ is not a member of ‘std’

According to the C++11 spec, it should be set in cmath. I tried defining _GLIBCXX_USE_C99_MATH_TR1 in config++.h, but that resulted in a heap of errors such as:
error: ‘::acoshl’ has not been declared

Acoshl and the others are missing from newlib (haven't checked clib2). They're part of the C99 spec.

[sba1]

Generally, it would help a lot if for all known problems, a simple test source code is provided that can be added in the test folder, even if the problem looks simple.

[ksdhans]

Sure:

`#include

int main(int argc, const char **argv) {
double valF = 2.4;
int val = std::trunc(valF);
printf("valF: %f, trunc(valF) = %d\n", valF, val);
return 0;
}`

This is part of the C++11 standard, so you'll need to set --std=c++11 or similar.

[kas1e]

from newlib's side everything about "not a member of std::" was fixed in the new beta of newlib 53.69 and adtools recompiled with new newlib's headers.