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main.cpp
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152 lines (129 loc) · 6.08 KB
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#include "fastio.h"
#include "fastio_ext.h"
#include <cfloat>
#include <climits>
#include <fstream>
#include <iostream>
#include <string>
#include <string_view>
using namespace std;
IOfast::Ifast fastin(STDIN_FILENO);
IOfast::Ofast fastout(STDOUT_FILENO);
IOfast::Ofast fasterr(STDERR_FILENO);
long gettime() {
timespec t;
clock_gettime(0, &t);
return t.tv_sec * (long)1e9 + t.tv_nsec;
}
#define SPEED_TEST(n, fn, end) \
{ \
size_t i = n; \
long __time = gettime(); \
while (i--) \
fn; \
end; \
__time = gettime() - __time; \
fasterr.fmt<"%ns\t%\n">(to_string((double)__time / n), #fn); \
}
string const long_string = "sfhsfhgalsfhglsvgeshrbabashrlahrbagrvbiagrviagilvsgiawurhlvbishfgsdfrgviaywrvtia";
string const short_string = "";
IOfast::Ofast &operator<<(IOfast::Ofast &out, nullptr_t) {
out.flush();
return out;
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int ptr = 0;
fasterr.fmt<"int: %\n">(-45);
fasterr.fmt<"char*: %\n">("test");
fasterr.fmt<"double: %\n">(123.456);
fasterr.fmt<"double: %\n">(DBL_MAX);
fasterr.fmt<"double: %\n">(DBL_MIN);
fasterr.fmt<"double: %\n">(-DBL_MAX);
fasterr.fmt<"float: %\n">(FLT_MAX);
fasterr.fmt<"void*: %\n">(&ptr);
fasterr.fmt<"vector<int>: %\n">(vector{3, 4, 5});
fasterr << '\n' << nullptr;
// clang-format off
SPEED_TEST(1e7, fastout << 0 , fastout.flush());
SPEED_TEST(1e7, printf("%d", 0), fflush(stdout));
SPEED_TEST(1e7, cout << 0 , cout.flush());
fasterr << '\n' << nullptr;
SPEED_TEST(1e7, fastout << ULONG_MAX , fastout.flush());
SPEED_TEST(1e7, printf("%ld", ULONG_MAX), fflush(stdout));
SPEED_TEST(1e7, cout << ULONG_MAX , cout.flush());
fasterr << '\n' << nullptr;
SPEED_TEST(1e7, fastout << &ptr , fastout.flush());
SPEED_TEST(1e7, printf("%p", (void*)&ptr), fflush(stdout));
SPEED_TEST(1e7, cout << &ptr , cout.flush());
fasterr << '\n' << nullptr;
SPEED_TEST(1e7, fastout << 'A' , fastout.flush());
SPEED_TEST(1e7, printf("%c", 'A'), fflush(stdout));
SPEED_TEST(1e7, putchar('A') , fflush(stdout));
SPEED_TEST(1e7, cout << 'A' , cout.flush());
SPEED_TEST(1e7, cout.put('A') , cout.flush());
fasterr << '\n' << nullptr;
SPEED_TEST(1e7, fastout << long_string , fastout.flush());
SPEED_TEST(1e7, fastout << long_string.c_str() , fastout.flush());
SPEED_TEST(1e7, fastout << (string_view)long_string , fastout.flush());
SPEED_TEST(1e7, fastout << (string_view)(long_string.c_str()), fastout.flush());
SPEED_TEST(1e7, printf("%s", long_string.data()) , fflush(stdout));
SPEED_TEST(1e7, puts(long_string.data()) , fflush(stdout));
SPEED_TEST(1e7, cout << long_string.data() , cout.flush());
SPEED_TEST(1e7, cout << long_string , cout.flush());
fasterr << '\n' << nullptr;
SPEED_TEST(1e7, fastout << short_string , fastout.flush());
SPEED_TEST(1e7, fastout << short_string.c_str() , fastout.flush());
SPEED_TEST(1e7, fastout << (string_view)short_string , fastout.flush());
SPEED_TEST(1e7, fastout << (string_view)(short_string.c_str()), fastout.flush());
SPEED_TEST(1e7, printf("%s", short_string.data()) , fflush(stdout));
SPEED_TEST(1e7, puts(short_string.data()) , fflush(stdout));
SPEED_TEST(1e7, cout << short_string.data() , cout.flush());
SPEED_TEST(1e7, cout << short_string , cout.flush());
fasterr << '\n' << nullptr;
SPEED_TEST(1e7, fastout.fmt<"sfhsfhgalsfhglsvgeshrbabashrlahrbagrvbiagrviagilvsgiawurhlvbishfgsdfrgviaywrvtia">(), fastout.flush());
SPEED_TEST(1e7, printf(long_string.data()) , fflush(stdout));
fasterr << '\n' << nullptr;
SPEED_TEST(1e7, fastout.fmt<"%%%%%%%%%%">('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j') , fastout.flush());
SPEED_TEST(1e7, fastout << 'a' << 'b' << 'c' << 'd' << 'e' << 'f' << 'g' << 'h' << 'i' << 'j' , fastout.flush());
SPEED_TEST(1e7, printf("%c%c%c%c%c%c%c%c%c%c", 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'), fflush(stdout));
SPEED_TEST(1e7, cout << 'a' << 'b' << 'c' << 'd' << 'e' << 'f' << 'g' << 'h' << 'i' << 'j' , cout.flush());
fasterr << '\n' << nullptr;
SPEED_TEST(1e7, fastout << 123.456 , fastout.flush());
SPEED_TEST(1e7, fastout << to_string(123.456), fastout.flush());
SPEED_TEST(1e7, printf("%f", 123.456) , fflush(stdout));
SPEED_TEST(1e7, printf("%g", 123.456) , fflush(stdout));
SPEED_TEST(1e7, cout << 123.456 , cout.flush());
fasterr << '\n' << nullptr;
SPEED_TEST(1e6, fastout << DBL_MAX , fastout.flush());
SPEED_TEST(1e6, fastout << (float)FLT_MAX , fastout.flush());
SPEED_TEST(1e6, printf("%g", DBL_MAX) , fflush(stdout));
SPEED_TEST(1e6, cout << DBL_MAX , cout.flush());
fasterr << '\n' << nullptr;
// clang-format on
{
IOfast::Ofast fout("tmp.txt");
for (size_t i = 0; i < 1e7; i++)
fout.fmt<"% ">(INT_MIN);
fout.flush();
close(fout.fd);
}
{
IOfast::Ifast fin("tmp.txt");
int x;
SPEED_TEST(1e7, fin >> x, );
close(fin.fd);
}
{
int x;
FILE *fin = fopen("tmp.txt", "rt");
SPEED_TEST(1e7, fscanf(fin, "%d", &x), );
}
{
int x;
ifstream fin("tmp.txt");
SPEED_TEST(1e7, fin >> x, );
}
fasterr.flush();
}