View Compilation Error

0_0_3034264_8360.cpp:15:19: invalid suffix "using" on floating constant
0_0_3034264_8360.cpp: In function `int dbcmp(double)':
0_0_3034264_8360.cpp:15: error: expected `)' before "namespace"
0_0_3034264_8360.cpp:15: error: expected primary-expression before ')' token
0_0_3034264_8360.cpp:15: error: expected `;' before ')' token
0_0_3034264_8360.cpp:16: error: expected primary-expression before "else"
0_0_3034264_8360.cpp:16: error: expected `;' before "else"
0_0_3034264_8360.cpp:17: error: expected primary-expression before "else"
0_0_3034264_8360.cpp:17: error: expected `;' before "else"