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+.TH LIBJ2_SFC_J2U 3 LIBJ2
+.SH NAME
+libj2_sfc_j2u \- Set first cleared bit
+
+.SH SYNOPSIS
+.nf
+#include <libj2.h>
+
+void \fBlibj2_sfc_j2u\fP(struct libj2_j2u *\fIa\fP);
+void \fBlibj2_sfc_j2u_to_j2u\fP(const struct libj2_j2u *\fIa\fP, struct libj2_j2u *\fIr\fP);
+.fi
+.PP
+Link with
+.IR -lj2 .
+
+.SH DESCRIPTION
+The
+.BR libj2_sfc_j2u ()
+function sets the first (least significant)
+cleared bit in
+.I a
+(no modification if all bits are set).
+.PP
+The
+.BR libj2_sfc_j2u_to_j2u ()
+function performs the same action as
+.BR libj2_sfc_j2u ()
+but instead of modifying
+.IR a ,
+the result is stored in
+.IR r .
+.PP
+The arguments are assumed to be
+.RI non- NULL .
+
+.SH RETURN VALUE
+None.
+
+.SH ERRORS
+The
+.BR libj2_sfc_j2u ()
+and
+.BR libj2_sfc_j2u_to_j2u ()
+functions cannot fail.
+
+.SH SEE ALSO
+.BR libj2 (7),
+.BR libj2_slc_j2u (3),
+.BR libj2_ffc_j2u (3),
+.BR libj2_kfs_j2u (3),
+.BR libj2_cfs_j2u (3)