View Compilation Error

0_0_34977041_24333.cpp: In static member function 'static unsigned int mod_field::fast_mod(uint64_t, unsigned int)':
0_0_34977041_24333.cpp:27:4: error: expected ')' before ':' token
    : "=a" (quot), "=d" (rem)
    ^
0_0_34977041_24333.cpp:27:28: error: expression cannot be used as a function
    : "=a" (quot), "=d" (rem)
                            ^
0_0_34977041_24333.cpp:28:30: error: expression cannot be used as a function
    : "d" (x_high), "a" (x_low), "r" (m));
                              ^
0_0_34977041_24333.cpp:28:39: error: expression cannot be used as a function
    : "d" (x_high), "a" (x_low), "r" (m));
                                       ^
0_0_34977041_24333.cpp:28:40: error: 'asm' was not declared in this scope
    : "d" (x_high), "a" (x_low), "r" (m));
                                        ^