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Minor code cleaning.

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This commit is contained in:
Daniel Lemire 2020-11-11 22:50:21 -05:00
parent 4e31533791
commit 1b775cd9a7
1 changed files with 34 additions and 22 deletions
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56
tests/exhaustive32_64.cpp
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@ -11,6 +11,37 @@ template <typename T> char *to_string(T d, char *buffer) {
return buffer + written; return buffer + written;
} }
bool basic_test_64bit(std::string vals, double val) {
double result_value;
auto result = fast_float::from_chars(vals.data(), vals.data() + vals.size(),
result_value);
if (result.ec != std::errc()) {
std::cerr << " I could not parse " << vals << std::endl;
return false;
}
if(copysign(1,result_value) != copysign(1,val)) {
std::cerr << "I got " << std::hexfloat << result_value << " but I was expecting " << val
<< std::endl;
return false;
} else if (std::isnan(val)) {
if (!std::isnan(result_value)) {
std::cerr << vals << std::endl;
std::cerr << "not nan" << result_value << std::endl;
return false;
}
} else if (result_value != val) {
std::cerr << vals << std::endl;
std::cerr << "I got " << std::hexfloat << result_value << " but I was expecting " << val
<< std::endl;
std::cerr << std::dec;
std::cerr << "string: " << vals << std::endl;
return false;
}
return true;
}
void all_32bit_values() { void all_32bit_values() {
char buffer[64]; char buffer[64];
for (uint64_t w = 0; w <= 0xFFFFFFFF; w++) { for (uint64_t w = 0; w <= 0xFFFFFFFF; w++) {
@ -25,28 +56,9 @@ void all_32bit_values() {
{ {
const char *string_end = to_string(v, buffer); const char *string_end = to_string(v, buffer);
double result_value; std::string s(buffer, size_t(string_end-buffer));
auto result = fast_float::from_chars(buffer, string_end, result_value); if(!basic_test_64bit(s,v)) {
if (result.ec != std::errc()) { return;
std::cerr << "parsing error ? " << buffer << std::endl;
abort();
}
if(copysign(1,result_value) != copysign(1,v)) {
std::cerr << buffer << std::endl;
std::cerr << "I got " << std::hexfloat << result_value << " but I was expecting " << v
<< std::endl;
abort();
} else if (std::isnan(v)) {
if (!std::isnan(result_value)) {
std::cerr << "not nan" << buffer << std::endl;
abort();
}
} else if (result_value != v) {
std::cerr << "no match ? " << buffer << std::endl;
std::cout << "started with " << std::hexfloat << v << std::endl;
std::cout << "got back " << std::hexfloat << result_value << std::endl;
std::cout << std::dec;
abort();
} }
} }
} }