From f95a4a932476be2ba99e2fd081e8d2bc6ea12813 Mon Sep 17 00:00:00 2001 From: PikalaxALT Date: Fri, 15 Dec 2017 09:38:53 -0500 Subject: Import newlib and create makefile --- newlib/libc/stdlib/wctomb.c | 64 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 newlib/libc/stdlib/wctomb.c (limited to 'newlib/libc/stdlib/wctomb.c') diff --git a/newlib/libc/stdlib/wctomb.c b/newlib/libc/stdlib/wctomb.c new file mode 100644 index 0000000..b961c5f --- /dev/null +++ b/newlib/libc/stdlib/wctomb.c @@ -0,0 +1,64 @@ +/* +FUNCTION +<>---minimal wide char to multibyte converter + +INDEX + wctomb + +ANSI_SYNOPSIS + #include + int wctomb(char *<[s]>, wchar_t <[wchar]>); + +TRAD_SYNOPSIS + #include + int wctomb(<[s]>, <[wchar]>) + char *<[s]>; + wchar_t <[wchar]>; + +DESCRIPTION +When MB_CAPABLE is not defined, this is a minimal ANSI-conforming +implementation of <>. The +only ``wide characters'' recognized are single bytes, +and they are ``converted'' to themselves. + +When MB_CAPABLE is defined, this routine calls <<_wctomb_r>> to perform +the conversion, passing a state variable to allow state dependent +decoding. The result is based on the locale setting which may +be restricted to a defined set of locales. + +Each call to <> modifies <<*<[s]>>> unless <[s]> is a null +pointer or MB_CAPABLE is defined and <[wchar]> is invalid. + +RETURNS +This implementation of <> returns <<0>> if +<[s]> is <>; it returns <<-1>> if MB_CAPABLE is enabled +and the wchar is not a valid multi-byte character, it returns <<1>> +if MB_CAPABLE is not defined or the wchar is in reality a single +byte character, otherwise it returns the number of bytes in the +multi-byte character. + +PORTABILITY +<> is required in the ANSI C standard. However, the precise +effects vary with the locale. + +<> requires no supporting OS subroutines. +*/ + +#include +int +_DEFUN (wctomb, (s, wchar), + char *s _AND + wchar_t wchar) +{ +#ifdef MB_CAPABLE + static int state; + + return _wctomb_r (_REENT, s, wchar, &state); +#else /* not MB_CAPABLE */ + if (s == NULL) + return 0; + + *s = (char) wchar; + return 1; +#endif /* not MB_CAPABLE */ +} -- cgit v1.2.3