about

a lightweight and efficient implementation of the C-runtime standard library, written in C++20.

Note

be aware that implementation of the some functions conform to the POSIX standard rather than the C standard. but inline intrinsics does preserve original C standard behaviour. see compability for details

usage

you can also define the next values to include additional features:

definition	note
Q_CRT_MEMORY_CRYPTO	add crypto-specific (timing-safe etc) memory functionality
Q_CRT_STRING_WIDE_TYPE	add full Unicode support for methods related to character types. note that this includes lookup tables with a total binary size of about ~11KB
Q_CRT_STRING_NATURAL	add functionality based on "natural" order comparison algorithm
Q_CRT_STRING_CONVERT	add string conversion functionality to convert strings to other data types and vice versa. note that this includes lookup tables with a total binary size of about ~1KB
Q_CRT_STRING_ENCODE	add encoding and decoding functionality, in particular UTF

compability

behavior of some functions has been changed in favor of the POSIX specification or GNU extensions to make them more sensible or less complex:

function	note
MemorySet	return value changed in favor of mempset(), type of the fill byte argument is changed to std::uint8_t
MemorySetW	return value changed in favor of wmempset()
MemoryCopy	return value changed in favor of mempcpy()
MemoryCopyW	return value changed in favor of wmempcpy()
StringCopy	return value changed in favor of stpcpy() / wcpcpy()
StringCopyN	return value changed in favor of stpncpy() / wcpncpy()
StringCat	return value changed in favor of stpcat() / wcpcat()
StringCatN	return value changed in favor of stpncat() / wcpncat()
StringSpan	return value changed in favor of strpspn() / wcspspn()

other than that behaviour of the rest functions are based on ISO-9899 (C standard)

further information

requires common library to be also installed. you can read about installation, contributing and look for other general information on the q-tee main page.