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31 .Nd "convert a wide-character string to a character string (restartable)"
38 .Fa "char * restrict dst" "const wchar_t ** restrict src"
39 .Fa "size_t len" "mbstate_t * restrict ps"
43 .Fa "char * restrict dst" "const wchar_t ** restrict src" "size_t nwc"
44 .Fa "size_t len" "mbstate_t * restrict ps"
49 function converts a string of wide characters indirectly pointed to by
51 to a corresponding multibyte character string stored in the array
63 no characters are stored.
69 the pointer pointed to by
71 is updated to point to the character after the one that conversion stopped at.
72 If conversion stops because a null character is encountered,
81 is used to keep track of the shift state.
85 uses an internal, static
87 object, which is initialized to the initial conversion state
92 function behaves identically to
94 except that conversion stops after reading at most
96 characters from the buffer pointed to by
103 functions return the number of bytes stored in
104 the array pointed to by
106 (not including any terminating null), if successful, otherwise it returns
107 .Po Vt size_t Pc Ns \-1 .
113 functions will fail if:
116 An invalid wide character was encountered.
118 The conversion state is invalid.
132 function is an extension to the standard.