View Compilation Error

0_0_4199497_26717.cpp: In function `int main()':
0_0_4199497_26717.cpp:97: error: `_isnan' undeclared (first use this function)
0_0_4199497_26717.cpp:97: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4199497_26717.cpp:97: error: `_finite' undeclared (first use this function)