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LibC: Add g/G modifiers to printf

This commit is contained in:
Bananymous 2025-05-04 11:41:54 +03:00
parent 9ff9d679e9
commit 1a38d0c31e
1 changed files with 22 additions and 1 deletions
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23
userspace/libraries/LibC/printf_impl.cpp
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@ -259,6 +259,19 @@ static void floating_point_to_exponent_string(char* buffer, T value, bool upper,
integer_to_string<int>(buffer + offset, exponent, 10, upper, exponent_options); integer_to_string<int>(buffer + offset, exponent, 10, upper, exponent_options);
} }
template<BAN::floating_point T>
static void floating_point_to_maybe_exponent_string(char* buffer, T value, bool upper, const format_options_t options)
{
int percision = 6;
if (options.percision != -1)
percision = options.percision;
const int exponent = (value != static_cast<T>(0.0)) ? BAN::Math::floor<T>(BAN::Math::log10(value)) : 0;
if (exponent < -4 || exponent >= percision)
return floating_point_to_exponent_string(buffer, value, upper, options);
return floating_point_to_string(buffer, value, upper, options);
}
extern "C" int printf_impl(const char* format, va_list arguments, int (*putc_fun)(int, void*), void* data) extern "C" int printf_impl(const char* format, va_list arguments, int (*putc_fun)(int, void*), void* data)
{ {
int written = 0; int written = 0;
@ -520,8 +533,16 @@ extern "C" int printf_impl(const char* format, va_list arguments, int (*putc_fun
} }
case 'g': case 'g':
case 'G': case 'G':
// TODO {
switch (options.length)
{
case length_t::L: floating_point_to_maybe_exponent_string<long double>(conversion, va_arg(arguments, long double), *format == 'G', options); break;
default: floating_point_to_maybe_exponent_string<double> (conversion, va_arg(arguments, double), *format == 'G', options); break;
}
string = conversion;
format++;
break; break;
}
case 'a': case 'a':
case 'A': case 'A':
// TODO // TODO