View Compilation Error

0_0_37749776_31826.cpp:91:0: error: unterminated argument list invoking macro "mul"
   for(int i=mid+1;i<=r;++i) a[i-mid-1]=mul(mul(f[i], po(sw[i], Mo
 ^
0_0_37749776_31826.cpp: In function 'void poly::cdqntt(int, int)':
0_0_37749776_31826.cpp:91:40: error: 'mul' was not declared in this scope
   for(int i=mid+1;i<=r;++i) a[i-mid-1]=mul(mul(f[i], po(sw[i], Mo
                                        ^
0_0_37749776_31826.cpp:91:40: error: expected '}' at end of input
0_0_37749776_31826.cpp: At global scope:
0_0_37749776_31826.cpp:91:40: error: expected '}' at end of input