View Compilation Error

0_0_14957549_12937.cpp:19:19: error: '__int64a' was not declared in this scope
 __int64 Quick_Mod(__int64a, __int64 b, __int64 m)
                   ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/crtdefs.h:10:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/stdio.h:9,
                 from 0_0_14957549_12937.cpp:1:
0_0_14957549_12937.cpp:19:29: error: expected primary-expression before 'long'
 __int64 Quick_Mod(__int64a, __int64 b, __int64 m)
                             ^
0_0_14957549_12937.cpp:19:40: error: expected primary-expression before 'long'
 __int64 Quick_Mod(__int64a, __int64 b, __int64 m)
                                        ^
0_0_14957549_12937.cpp:19:49: error: expression list treated as compound expression in initializer [-fpermissive]
 __int64 Quick_Mod(__int64a, __int64 b, __int64 m)
                                                 ^
0_0_14957549_12937.cpp:20:1: error: expected ',' or ';' before '{' token
 {
 ^