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| author | mike <mike@FreeBSD.org> | 2002-09-18 07:33:16 +0000 |
|---|---|---|
| committer | mike <mike@FreeBSD.org> | 2002-09-18 07:33:16 +0000 |
| commit | e35c51c74c9136c275aff6e68216801a7262f546 (patch) | |
| tree | d9550a771c43d65b540d4e46a2dadaefba483323 /share/man/man3/stdarg.3 | |
| parent | 397f4349cf97eb654d15023a7c4b6b06fd206725 (diff) | |
| download | FreeBSD-src-e35c51c74c9136c275aff6e68216801a7262f546.zip FreeBSD-src-e35c51c74c9136c275aff6e68216801a7262f546.tar.gz | |
Implement C99's va_copy() macro.
Diffstat (limited to 'share/man/man3/stdarg.3')
| -rw-r--r-- | share/man/man3/stdarg.3 | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/share/man/man3/stdarg.3 b/share/man/man3/stdarg.3 index 354fc0a..e3f28e8 100644 --- a/share/man/man3/stdarg.3 +++ b/share/man/man3/stdarg.3 @@ -36,7 +36,7 @@ .\" @(#)stdarg.3 8.1 (Berkeley) 6/5/93 .\" $FreeBSD$ .\" -.Dd June 5, 1993 +.Dd September 18, 2002 .Dt STDARG 3 .Os .Sh NAME @@ -49,6 +49,8 @@ .Ft type .Fn va_arg "va_list ap" type .Ft void +.Fn va_copy "va_list dest" "va_list src" +.Ft void .Fn va_end "va_list ap" .Sh DESCRIPTION A function may be called with a varying number of arguments of varying @@ -132,6 +134,27 @@ Successive invocations return the values of the remaining arguments. .Pp The +.Fn va_copy +macro copies a variable argument list, previously initialized by +.Fn va_start , +from +.Va src +to +.Va dest . +The state is preserved such that it is equivalent to calling +.Fn va_start +with the same second argument used with +.Va src , +and calling +.Fn va_arg +the same number of times as called with +.Va src . +.Pp +The +.Fn va_copy +macro returns no value. +.Pp +The .Fn va_end macro handles a normal return from the function whose variable argument list was initialized by |
