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Compare operator test suite: forward and reverse compares; edge and corner cases; literals, autos, statics, simple expressions; signed and unsigned; some special cases.

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Alex Volkov
2026-03-09 20:04:59 -04:00
parent d45fac3afe
commit 76d71aec92
16 changed files with 3906 additions and 0 deletions
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test/val/compare-rev11.c Normal file
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/* Exercise compare operator edge cases in forward and reverse forms;
** signed char: literals, autos.
** Note: will cause many compiler warnings:
** -- Result of comparison is always (true|false)
** -- Unreachable code
**
** License: Public Domain
**
** This software is provided 'as-is', without any express or implied warranty.
** In no event will the authors be held liable for any damages arising from
** the use of this software.
*/
#include <stdio.h>
#include <stdlib.h>
#define TEST_NAME "compare-rev11"
#include "compare-rev.h"
/* Compared values are signed int literals */
#define N129 -129
#define N128 -128
#define N127 -127
#define N1 -1
#define ZERO 0
#define P1 1
#define P127 127
#define P128 128
#define P255 255
#define P256 256
/* signed char to signed literal compares */
static void schar_loc_to_slit_11(void)
{
signed char v;
v = -128;
marker = 0x1100; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N129);
MUST_BE_EQUAL(v, N128);
MUST_BE_LESS_THAN(v, N127);
MUST_BE_LESS_THAN(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P127);
MUST_BE_LESS_THAN(v, P128);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
}
static void schar_loc_to_slit_13(void)
{
signed char v;
v = -127;
marker = 0x1300; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N129);
MUST_BE_GREATER_THAN(v, N128);
MUST_BE_EQUAL(v, N127);
MUST_BE_LESS_THAN(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P127);
MUST_BE_LESS_THAN(v, P128);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
}
static void schar_loc_to_slit_15(void)
{
signed char v;
v = -2;
marker = 0x1500; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N129);
MUST_BE_GREATER_THAN(v, N128);
MUST_BE_GREATER_THAN(v, N127);
MUST_BE_LESS_THAN(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P127);
MUST_BE_LESS_THAN(v, P128);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
}
static void schar_loc_to_slit_17(void)
{
signed char v;
v = -1;
marker = 0x1700; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N129);
MUST_BE_GREATER_THAN(v, N128);
MUST_BE_GREATER_THAN(v, N127);
MUST_BE_EQUAL(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P127);
MUST_BE_LESS_THAN(v, P128);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
}
static void schar_loc_to_slit_19(void)
{
signed char v;
v = 0;
marker = 0x1900; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N129);
MUST_BE_GREATER_THAN(v, N128);
MUST_BE_GREATER_THAN(v, N127);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_EQUAL(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P127);
MUST_BE_LESS_THAN(v, P128);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
}
static void schar_loc_to_slit_1B(void)
{
signed char v;
v = 1;
marker = 0x1B00; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N129);
MUST_BE_GREATER_THAN(v, N128);
MUST_BE_GREATER_THAN(v, N127);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_EQUAL(v, P1);
MUST_BE_LESS_THAN(v, P127);
MUST_BE_LESS_THAN(v, P128);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
}
static void schar_loc_to_slit_1D(void)
{
signed char v;
v = 2;
marker = 0x1D00; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N129);
MUST_BE_GREATER_THAN(v, N128);
MUST_BE_GREATER_THAN(v, N127);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_GREATER_THAN(v, P1);
MUST_BE_LESS_THAN(v, P127);
MUST_BE_LESS_THAN(v, P128);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
}
static void schar_loc_to_slit_1F(void)
{
signed char v;
v = 127;
marker = 0x1F00; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N129);
MUST_BE_GREATER_THAN(v, N128);
MUST_BE_GREATER_THAN(v, N127);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_GREATER_THAN(v, P1);
MUST_BE_EQUAL(v, P127);
MUST_BE_LESS_THAN(v, P128);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
}
int main(void)
{
marker = 0x01;
schar_loc_to_slit_11();
schar_loc_to_slit_13();
schar_loc_to_slit_15();
schar_loc_to_slit_17();
schar_loc_to_slit_19();
schar_loc_to_slit_1B();
schar_loc_to_slit_1D();
schar_loc_to_slit_1F();
printf(TEST_NAME " failures: %d\n", failures);
return failures ? EXIT_FAILURE : EXIT_SUCCESS;
}