View Compilation Error

0_0_11488598_29515.cpp: In function `int main()':
0_0_11488598_29515.cpp:9: error: `__float128' undeclared (first use this function)
0_0_11488598_29515.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11488598_29515.cpp:9: error: expected `;' before "c"