From 2bf851de6dd3a64f91a72a9afba2b3637dbbe154 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Thu, 4 Dec 2025 19:25:47 +0100 Subject: First commit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libj2_j2u_test_bit.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 libj2_j2u_test_bit.c (limited to 'libj2_j2u_test_bit.c') diff --git a/libj2_j2u_test_bit.c b/libj2_j2u_test_bit.c new file mode 100644 index 0000000..2d4661b --- /dev/null +++ b/libj2_j2u_test_bit.c @@ -0,0 +1,39 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" +#ifndef TEST + +extern inline int libj2_j2u_test_bit(const struct libj2_j2u *a, unsigned b); +/* TODO Add man page */ + + +#else + +int +main(void) +{ + struct libj2_j2u a; + unsigned i, j, k; + + for (k = 1; k <= 10; k++) { + for (j = 0; j < k; j++) { + a.high = 0; + a.low = 0; + for (i = 0; i < LIBJ2_J2U_BIT; i++) { + if (i % k != j) + continue; + if (i < LIBJ2_JU_BIT) + a.low |= (uintmax_t)1 << i; + else + a.high |= (uintmax_t)1 << (i - LIBJ2_JU_BIT); + } + for (i = 0; i < LIBJ2_J2U_BIT; i++) + EXPECT(libj2_j2u_test_bit(&a, i) == (i % k == j)); + for (i = LIBJ2_J2U_BIT; i < 2U * LIBJ2_J2U_BIT; i++) + EXPECT(libj2_j2u_test_bit(&a, i) == 0); + } + } + + return 0; +} + +#endif -- cgit v1.2.3-70-g09d2