98 std::cout << std::right << std::setw(20) <<
"CHECK PLUS FUNCTION: p'(x) with x = "
99 << x <<
" is correct?\n";
100 std::cout << std::right << std::setw(20) <<
"t"
101 << std::setw(20) <<
"p'(x)"
102 << std::setw(20) <<
"(p(x+t)-p(x))/t"
103 << std::setw(20) <<
"Error"
105 for (
int i = 0; i < 13; i++) {
108 err = std::abs(diff-dv);
109 std::cout << std::scientific << std::setprecision(11) << std::right
110 << std::setw(20) << t
111 << std::setw(20) << dv
112 << std::setw(20) << diff
113 << std::setw(20) << err
125 std::cout << std::right << std::setw(20) <<
"CHECK PLUS FUNCTION: p''(x) with x = "
126 << x <<
" is correct?\n";
127 std::cout << std::right << std::setw(20) <<
"t"
128 << std::setw(20) <<
"p''(x)"
129 << std::setw(20) <<
"(p'(x+t)-p'(x))/t"
130 << std::setw(20) <<
"Error"
132 for (
int i = 0; i < 13; i++) {
135 err = std::abs(diff-dv);
136 std::cout << std::scientific << std::setprecision(11) << std::right
137 << std::setw(20) << t
138 << std::setw(20) << dv
139 << std::setw(20) << diff
140 << std::setw(20) << err