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Signed-off-by: Shikhar <shikharish05@gmail.com>
This commit is contained in:
Shikhar 2025-12-25 03:06:22 +05:30
parent e076a81b2d
commit 97cb3ec28d
1 changed files with 51 additions and 50 deletions
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33
tests/ipv4_test.cpp
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@ -5,12 +5,12 @@
#include <algorithm> #include <algorithm>
#include "fast_float/fast_float.h" #include "fast_float/fast_float.h"
char* uint8_to_chars_manual(char* ptr, uint8_t value) { char *uint8_to_chars_manual(char *ptr, uint8_t value) {
if (value == 0) { if (value == 0) {
*ptr++ = '0'; *ptr++ = '0';
return ptr; return ptr;
} }
char* start = ptr; char *start = ptr;
while (value > 0) { while (value > 0) {
*ptr++ = '0' + (value % 10); *ptr++ = '0' + (value % 10);
value /= 10; value /= 10;
@ -20,15 +20,12 @@ char* uint8_to_chars_manual(char* ptr, uint8_t value) {
return ptr; return ptr;
} }
void uint32_to_ipv4_string(uint32_t ip, char* buffer) { void uint32_to_ipv4_string(uint32_t ip, char *buffer) {
uint8_t octets[4] = { uint8_t octets[4] = {static_cast<uint8_t>(ip >> 24),
static_cast<uint8_t>(ip >> 24),
static_cast<uint8_t>(ip >> 16), static_cast<uint8_t>(ip >> 16),
static_cast<uint8_t>(ip >> 8), static_cast<uint8_t>(ip >> 8), static_cast<uint8_t>(ip)};
static_cast<uint8_t>(ip)
};
char* ptr = buffer; char *ptr = buffer;
for (int i = 0; i < 4; ++i) { for (int i = 0; i < 4; ++i) {
ptr = uint8_to_chars_manual(ptr, octets[i]); ptr = uint8_to_chars_manual(ptr, octets[i]);
@ -40,9 +37,10 @@ void uint32_to_ipv4_string(uint32_t ip, char* buffer) {
*ptr = '\0'; *ptr = '\0';
} }
fastfloat_really_inline uint32_t ipv4_string_to_uint32(const char* str, const char* end) { fastfloat_really_inline uint32_t ipv4_string_to_uint32(const char *str,
const char *end) {
uint32_t ip = 0; uint32_t ip = 0;
const char* current = str; const char *current = str;
for (int i = 0; i < 4; ++i) { for (int i = 0; i < 4; ++i) {
uint8_t value; uint8_t value;
@ -63,17 +61,20 @@ fastfloat_really_inline uint32_t ipv4_string_to_uint32(const char* str, const ch
} }
bool test_all_ipv4_conversions() { bool test_all_ipv4_conversions() {
std::cout << "Testing all IPv4 conversions... 0, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, ..." << std::endl; std::cout << "Testing all IPv4 conversions... 0, 1000, 2000, 3000, 4000, "
"5000, 6000, 7000, 8000, 9000, ..."
<< std::endl;
char buffer[16]; char buffer[16];
for (uint64_t ip = 0; ip <= 0xFFFFFFFF; ip+=1000) { for (uint64_t ip = 0; ip <= 0xFFFFFFFF; ip += 1000) {
if(ip % 10000000 == 0) { if (ip % 10000000 == 0) {
std::cout << "." << std::flush; std::cout << "." << std::flush;
} }
uint32_to_ipv4_string(static_cast<uint32_t>(ip), buffer); uint32_to_ipv4_string(static_cast<uint32_t>(ip), buffer);
const char* end = buffer + strlen(buffer); const char *end = buffer + strlen(buffer);
uint32_t parsed_ip = ipv4_string_to_uint32(buffer, end); uint32_t parsed_ip = ipv4_string_to_uint32(buffer, end);
if (parsed_ip != ip) { if (parsed_ip != ip) {
std::cerr << "Mismatch: original " << ip << ", parsed " << parsed_ip << std::endl; std::cerr << "Mismatch: original " << ip << ", parsed " << parsed_ip
<< std::endl;
return false; return false;
} }
} }