Add subtraction and addition with carry/borrow and add abs_diff1.2

Signed-off-by: Mattias Andrée <m@maandree.se>

1 files changed, 56 insertions, 0 deletions

diff --git a/libj2_j2u_abs_diff_j2u.3 b/libj2_j2u_abs_diff_j2u.3
new file mode 100644
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+++ b/libj2_j2u_abs_diff_j2u.3
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+.TH LIBJ2_J2U_ABS_DIFF_J2U 3 LIBJ2
+.SH NAME
+libj2_j2u_abs_diff_j2u \- Calculate absolute difference
+
+.SH SYNOPSIS
+.nf
+#include <libj2.h>
+
+void \fBlibj2_j2u_abs_diff_j2u\fP(struct libj2_j2u *\fIa\fP, const struct libj2_j2u *\fIb\fP);
+void \fBlibj2_j2u_abs_diff_j2u_to_j2u\fP(const struct libj2_j2u *\fIa\fP, const struct libj2_j2u *\fIb\fP, struct libj2_j2u *\fIr\fP);
+void \fBlibj2_j2i_abs_diff_j2i_to_j2u\fP(const struct libj2_j2i *\fIa\fP, const struct libj2_j2i *\fIb\fP, struct libj2_j2u *\fIr\fP);
+void \fBlibj2_ji_abs_diff_ju_to_j2u\fP(intmax_t \fIa\fP, uintmax_t \fIb\fP, struct libj2_j2u *\fIr\fP);
+void \fBlibj2_ju_abs_diff_ji_to_j2u\fP(uintmax_t \fIa\fP, intmax_t \fIb\fP, struct libj2_j2u *\fIr\fP);
+.fi
+.PP
+Link with
+.IR -lj2 .
+
+.SH DESCRIPTION
+The above listed functions calculate the
+value absolute of the difference of the
+values of
+.I a
+and
+.I b
+and stores the result in
+.IR r ,
+except the
+.BR libj2_j2u_abs_diff_j2u ()
+function, which stores the result in
+.IR a .
+.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_j2u_abs_diff_j2u (),
+.BR libj2_j2u_abs_diff_j2u_to_j2u (),
+.BR libj2_j2i_abs_diff_j2i_to_j2u (),
+.BR libj2_ju_abs_diff_ji_to_j2u (),
+and
+.BR libj2_ji_abs_diff_ju_to_j2u ()
+functions were added in version 1.2 of
+.BR libj2 .
+
+.SH SEE ALSO
+.BR libj2 (7),
+.BR libj2_j2i_sub_j2i (3),
+.BR libj2_j2u_sub_j2u (3)