0_0_39198617_22267.cpp:6:17: error: 'acos' was not declared in this scope
6 | const double pi=acos(-1);
| ^~~~
0_0_39198617_22267.cpp: In function 'void fft(cpx*, long long int, bool)':
0_0_39198617_22267.cpp:34:24: error: 'cos' was not declared in this scope
34 | cpx un(cos(2*pi/p),sin(2*pi/p));
| ^~~
0_0_39198617_22267.cpp:34:36: error: 'sin' was not declared in this scope
34 | cpx un(cos(2*pi/p),sin(2*pi/p));
| ^~~
0_0_39198617_22267.cpp: In function 'void times(long long int*, long long int*, long long int, long long int)':
0_0_39198617_22267.cpp:87:9: error: 'memset' was not declared in this scope
87 | memset(a1,0,sizeof(a1));
| ^~~~~~
0_0_39198617_22267.cpp:2:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
1 | #include<iostream>
+++ |+#include <cstring>
2 | #define int long long
0_0_39198617_22267.cpp: In function 'int main()':
0_0_39198617_22267.cpp:144:9: error: 'reverse' was not declared in this scope
144 | reverse(u,u+n);
| ^~~~~~~
|
