From bc03a666203de25faf6246847fecbc8502267212 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 6 Dec 2025 16:13:53 +0100 Subject: Add saturated arithmetic operations MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libj2_j2u_lsh.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'libj2_j2u_lsh.c') diff --git a/libj2_j2u_lsh.c b/libj2_j2u_lsh.c index 914c3b2..3d4f7fd 100644 --- a/libj2_j2u_lsh.c +++ b/libj2_j2u_lsh.c @@ -126,6 +126,10 @@ check(const char *pattern) EXPECT(libj2_j2u_lsh_overflow(&r, i) == overflows); EXPECT(libj2_j2u_eq_j2u(&r, &expected)); + r = a; + libj2_j2u_sat_lsh(&r, i); + EXPECT(overflows ? libj2_j2u_is_max(&r) : libj2_j2u_eq_j2u(&r, &expected)); + r = a; EXPECT(libj2_j2u_lsh_overflow_p((const struct libj2_j2u *)&r, i) == overflows); EXPECT(libj2_j2u_eq_j2u(&r, &a)); @@ -140,6 +144,11 @@ check(const char *pattern) EXPECT(libj2_j2u_eq_j2u(&r, &expected)); EXPECT(libj2_j2u_eq_j2u(&a, &a_saved)); + r = (struct libj2_j2u){111, 222}; + libj2_j2u_sat_lsh_to_j2u(&a, i, &r); + EXPECT(overflows ? libj2_j2u_is_max(&r) : libj2_j2u_eq_j2u(&r, &expected)); + EXPECT(libj2_j2u_eq_j2u(&a, &a_saved)); + r = a; libj2_j2u_lsh_to_j2u(&r, i, &r); EXPECT(libj2_j2u_eq_j2u(&r, &expected)); @@ -147,6 +156,10 @@ check(const char *pattern) r = a; EXPECT(libj2_j2u_lsh_to_j2u_overflow(&r, i, &r) == overflows); EXPECT(libj2_j2u_eq_j2u(&r, &expected)); + + r = a; + libj2_j2u_sat_lsh_to_j2u(&r, i, &r); + EXPECT(overflows ? libj2_j2u_is_max(&r) : libj2_j2u_eq_j2u(&r, &expected)); } } -- cgit v1.2.3-70-g09d2