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/*
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/*
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@deftypefn Supplemental int vsnprintf (char *@var{buf}, size_t @var{n}, const char *@var{format}, va_list @var{ap})
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@deftypefn Supplemental int vsnprintf (char *@var{buf}, size_t @var{n}, const char *@var{format}, va_list @var{ap})
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This function is similar to vsprintf, but it will print at most
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This function is similar to @code{vsprintf}, but it will write to
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@var{n} characters. On error the return value is -1, otherwise it
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@var{buf} at most @code{@var{n}-1} bytes of text, followed by a
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returns the number of characters that would have been printed had
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terminating null byte, for a total of @var{n} bytes. On error the
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@var{n} been sufficiently large, regardless of the actual value of
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return value is -1, otherwise it returns the number of characters that
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@var{n}. Note some pre-C99 system libraries do not implement this
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would have been printed had @var{n} been sufficiently large,
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correctly so users cannot generally rely on the return value if the
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regardless of the actual value of @var{n}. Note some pre-C99 system
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system version of this function is used.
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libraries do not implement this correctly so users cannot generally
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rely on the return value if the system version of this function is
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used.
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@end deftypefn
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@end deftypefn
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*/
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*/
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