static inline int color_is_similar(const T* color, const T& r, const T& g, const T& b, T tol)
{
T sqr_dist = (T)sqrt_op((color[0] - r)*(color[0] - r) + (color[1] - g)*(color[1] - g) + (color[2] - b)*(color[2] - b));
if (sqr_dist < tol)
return 1;
else
return 0;
}
bool forward_dir(void)
{ bool ok = true;
//
ok &= abs_op();
ok &= acos_op();
ok &= acosh_op();
ok &= asin_op();
ok &= asinh_op();
ok &= atan_op();
ok &= atanh_op();
ok &= addpv_op();
ok &= addvv_op();
ok &= cexp_op();
ok &= cosh_op();
ok &= cos_op();
ok &= csum_op();
ok &= dis_op();
ok &= divpv_op();
ok &= divvp_op();
ok &= divvv_op();
ok &= exp_op();
ok &= load_op();
ok &= log_op();
ok &= mulpv_op();
ok &= par_op();
ok &= powpv_op();
ok &= powvp_op();
ok &= powvv_op();
ok &= sign_op();
ok &= sin_op();
ok &= sinh_op();
ok &= subpv_op();
ok &= subvp_op();
ok &= subvv_op();
ok &= sqrt_op();
ok &= tan_op();
ok &= tanh_op();
ok &= usr_op();
//
return ok;
}
