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+.TH LIBJ2_ABS_J2I 3 LIBJ2
+.SH NAME
+libj2_abs_j2i \- Calculate absolute value
+
+.SH SYNOPSIS
+.nf
+#include <libj2.h>
+
+void \fBlibj2_abs_j2i\fP(struct libj2_j2i *\fIa\fP);
+void \fBlibj2_abs_j2i_to_j2i\fP(const struct libj2_j2i *\fIa\fP, struct libj2_j2i *\fIr\fP);
+void \fBlibj2_abs_j2i_to_j2u\fP(const struct libj2_j2i *\fIa\fP, struct libj2_j2u *\fIr\fP);
+.fi
+.PP
+Link with
+.IR -lj2 .
+
+.SH DESCRIPTION
+The
+.BR libj2_abs_j2i (),
+.BR libj2_abs_j2i_to_j2i (),
+and
+.BR libj2_abs_j2i_to_j2u ()
+functions calculate the absolute value of
+.IR a .
+.PP
+The
+.BR libj2_abs_j2i ()
+function stores the result in
+.IR a .
+.PP
+The
+.BR libj2_abs_j2i_to_j2i ()
+and
+.BR libj2_abs_j2i_to_j2u ()
+function stores the result in
+.IR r .
+.PP
+In the case that
+.I a
+is the minimum representable value, the
+calculation of the
+.BR libj2_abs_j2i ()
+and
+.BR libj2_abs_j2i_to_j2i ()
+functions overflow to the input value.
+.PP
+The arguments are assumed to be
+.RI non- NULL .
+
+.SH RETURN VALUE
+None.
+
+.SH ERRORS
+The above listed functions cannot fail.
+
+.SH HISTORY
+The
+.BR libj2_abs_j2i (),
+.BR libj2_abs_j2i_to_j2i (),
+and
+.BR libj2_abs_j2i_to_j2u ()
+functions were added in version 1.1 of
+.BR libj2 .
+
+.SH SEE ALSO
+.BR libj2 (7),
+.BR libj2_minus_j2i (3),
+.BR libj2_minus_abs_j2i (3)