numeric.h File Reference

#include <bit>
#include <charconv>
#include <cerrno>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <format>
#include <string>
#include <string_view>
#include <type_traits>
#include <rex/assert.h>
#include <rex/platform.h>
#include <rex/string/text.h>
#include <rex/types.h>

Go to the source code of this file.

Namespaces
namespace	rex

Functions
std::string	rex::string::to_hex_string (u32 value)
std::string	rex::string::to_hex_string (u64 value)
std::string	rex::string::to_hex_string (f32 value)
std::string	rex::string::to_hex_string (f64 value)
template<typename T>
T	rex::string::from_string (const std::string_view value, bool force_hex=false)
template<>
bool	rex::string::from_string< bool > (const std::string_view value, bool force_hex)
template<>
i8	rex::string::from_string< i8 > (const std::string_view value, bool force_hex)
template<>
u8	rex::string::from_string< u8 > (const std::string_view value, bool force_hex)
template<>
i16	rex::string::from_string< i16 > (const std::string_view value, bool force_hex)
template<>
u16	rex::string::from_string< u16 > (const std::string_view value, bool force_hex)
template<>
i32	rex::string::from_string< i32 > (const std::string_view value, bool force_hex)
template<>
u32	rex::string::from_string< u32 > (const std::string_view value, bool force_hex)
template<>
i64	rex::string::from_string< i64 > (const std::string_view value, bool force_hex)
template<>
u64	rex::string::from_string< u64 > (const std::string_view value, bool force_hex)
template<>
f32	rex::string::from_string< f32 > (const std::string_view value, bool force_hex)
template<>
f64	rex::string::from_string< f64 > (const std::string_view value, bool force_hex)

Detailed Description

Copyright

Copyright (c) 2026 Tom Clay tomc@.nosp@m.tcte.nosp@m.chstu.nosp@m.ff.c.nosp@m.om All rights reserved.

License

BSD 3-Clause License See LICENSE file in the project root for full license text.

Remarks

Derived from Xenia's xenia/base/string_util.h (Ben Vanik, 2020).

Function Documentation

from_string()

template<typename T>

T rex::string::from_string ( const std::string_view value, bool force_hex = false )

inline

Parses a value from a string. Only the specializations parse.

Parameters

force_hex

True to parse integers and floats as hex without a prefix.

from_string< bool >()

template<>

bool rex::string::from_string< bool > ( const std::string_view value, bool force_hex )

inline

Parses a boolean. Accepts "true", "1" or "yes".

Parameters

force_hex

Unused.

Returns

True for "true", "1" or "yes", false otherwise.

from_string< f32 >()

template<>

f32 rex::string::from_string< f32 > ( const std::string_view value, bool force_hex )

inline

Parses a 32 bit float. Hex text gives the raw bits.

Parameters

force_hex

True to parse as raw hex bits without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< f64 >()

template<>

f64 rex::string::from_string< f64 > ( const std::string_view value, bool force_hex )

inline

Parses a 64 bit float. Hex text gives the raw bits.

Parameters

force_hex

True to parse as raw hex bits without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< i16 >()

template<>

i16 rex::string::from_string< i16 > ( const std::string_view value, bool force_hex )

inline

Parses a signed 16 bit integer. Hex takes a "0x" prefix or an "h" suffix.

Parameters

force_hex

True to parse as hex without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< i32 >()

template<>

i32 rex::string::from_string< i32 > ( const std::string_view value, bool force_hex )

inline

Parses a signed 32 bit integer. Hex takes a "0x" prefix or an "h" suffix.

Parameters

force_hex

True to parse as hex without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< i64 >()

template<>

i64 rex::string::from_string< i64 > ( const std::string_view value, bool force_hex )

inline

Parses a signed 64 bit integer. Hex takes a "0x" prefix or an "h" suffix.

Parameters

force_hex

True to parse as hex without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< i8 >()

template<>

i8 rex::string::from_string< i8 > ( const std::string_view value, bool force_hex )

inline

Parses a signed 8 bit integer. Hex takes a "0x" prefix or an "h" suffix.

Parameters

force_hex

True to parse as hex without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< u16 >()

template<>

u16 rex::string::from_string< u16 > ( const std::string_view value, bool force_hex )

inline

Parses an unsigned 16 bit integer. Hex takes a "0x" prefix or an "h" suffix.

Parameters

force_hex

True to parse as hex without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< u32 >()

template<>

u32 rex::string::from_string< u32 > ( const std::string_view value, bool force_hex )

inline

Parses an unsigned 32 bit integer. Hex takes a "0x" prefix or an "h" suffix.

Parameters

force_hex

True to parse as hex without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< u64 >()

template<>

u64 rex::string::from_string< u64 > ( const std::string_view value, bool force_hex )

inline

Parses an unsigned 64 bit integer. Hex takes a "0x" prefix or an "h" suffix.

Parameters

force_hex

True to parse as hex without a prefix.

Returns

The value, or 0 when the text does not parse.

from_string< u8 >()

template<>

u8 rex::string::from_string< u8 > ( const std::string_view value, bool force_hex )

inline

Parses an unsigned 8 bit integer. Hex takes a "0x" prefix or an "h" suffix.

Parameters

force_hex

True to parse as hex without a prefix.

Returns

The value, or 0 when the text does not parse.

to_hex_string() [1/4]

std::string rex::string::to_hex_string ( f32 value )

inline

Formats the bits of a 32 bit float as 8 uppercase hex digits.

Returns

The hex digits without a prefix.

to_hex_string() [2/4]

std::string rex::string::to_hex_string ( f64 value )

inline

Formats the bits of a 64 bit float as 16 uppercase hex digits.

Returns

The hex digits without a prefix.

to_hex_string() [3/4]

std::string rex::string::to_hex_string ( u32 value )

inline

Formats a 32 bit value as 8 uppercase hex digits.

Returns

The hex digits without a prefix.

to_hex_string() [4/4]

std::string rex::string::to_hex_string ( u64 value )

inline

Formats a 64 bit value as 16 uppercase hex digits.

Returns

The hex digits without a prefix.