/in/foo.cc: In member function 'void interval::load(func)':
/in/foo.cc:121:37: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
 if (t = fi(ff.value(l) - f.value(l)))
                                     ^
/in/foo.cc:126:42: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
 else if (t = fi(ff.value(r) - f.value(r)))
                                          ^