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_is_min.c | 197 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 197 insertions(+) create mode 100644 libj2_j2u_is_min.c (limited to 'libj2_j2u_is_min.c') diff --git a/libj2_j2u_is_min.c b/libj2_j2u_is_min.c new file mode 100644 index 0000000..a2a7565 --- /dev/null +++ b/libj2_j2u_is_min.c @@ -0,0 +1,197 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" +#ifndef TEST + +extern inline int libj2_j2u_is_min(const struct libj2_j2u *a); +/* TODO Add man page */ + + +#else + +int +main(void) +{ + struct libj2_j2u value; + uintmax_t a, b; + int i, j; + + for (i = 0; i < CHAR_BIT * (int)sizeof(uintmax_t); i++) { + for (j = 0; j < CHAR_BIT * (int)sizeof(uintmax_t); j++) { + value.high = a = (uintmax_t)(i + 1); + value.low = b = (uintmax_t)(j + 1); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = a = (uintmax_t)1 << i; + value.low = b = (uintmax_t)(j + 1); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = a = (uintmax_t)(i + 1); + value.low = b = (uintmax_t)1 << j; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = a = (uintmax_t)1 << i; + value.low = b = (uintmax_t)1 << j; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = a = ~((uintmax_t)(i + 1)); + value.low = b = ~((uintmax_t)(j + 1)); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = a = ~((uintmax_t)1 << i); + value.low = b = ~((uintmax_t)(j + 1)); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = a = ~((uintmax_t)(i + 1)); + value.low = b = ~((uintmax_t)1 << j); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = a = ~((uintmax_t)1 << i); + value.low = b = ~((uintmax_t)1 << j); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + } + + value.high = 0; + value.low = a = (uintmax_t)(i + 1); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == 0); + EXPECT(value.low == a); + + value.high = a = (uintmax_t)(i + 1); + value.low = 0; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == 0); + + value.high = 0; + value.low = a = (uintmax_t)1 << i; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == 0); + EXPECT(value.low == a); + + value.high = a = (uintmax_t)1 << i; + value.low = 0; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == 0); + + value.high = 0; + value.low = a = ~((uintmax_t)(i + 1)); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == 0); + EXPECT(value.low == a); + + value.high = a = ~((uintmax_t)(i + 1)); + value.low = 0; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == 0); + + value.high = 0; + value.low = a = ~((uintmax_t)1 << i); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == 0); + EXPECT(value.low == a); + + value.high = a = ~((uintmax_t)1 << i); + value.low = 0; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == 0); + + b = ~(uintmax_t)0; + + value.high = b; + value.low = a = (uintmax_t)(i + 1); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == b); + EXPECT(value.low == a); + + value.high = a = (uintmax_t)(i + 1); + value.low = b; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = b; + value.low = a = (uintmax_t)1 << i; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == b); + EXPECT(value.low == a); + + value.high = a = (uintmax_t)1 << i; + value.low = b; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = b; + value.low = a = ~((uintmax_t)(i + 1)); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == b); + EXPECT(value.low == a); + + value.high = a = ~((uintmax_t)(i + 1)); + value.low = b; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + + value.high = b; + value.low = a = ~((uintmax_t)1 << i); + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == b); + EXPECT(value.low == a); + + value.high = a = ~((uintmax_t)1 << i); + value.low = b; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == b); + } + + value.high = 0; + value.low = 0; + EXPECT(libj2_j2u_is_min(&value) == 1); + EXPECT(value.high == 0); + EXPECT(value.low == 0); + + a = ~(uintmax_t)0; + + value.high = 0; + value.low = a; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == 0); + EXPECT(value.low == a); + + value.high = a; + value.low = 0; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == 0); + + value.high = a; + value.low = a; + EXPECT(!libj2_j2u_is_min(&value)); + EXPECT(value.high == a); + EXPECT(value.low == a); + + return 0; +} + +#endif -- cgit v1.2.3-70-g09d2