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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-rev51.c Normal file
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/* Exercise compare operator expression cases in forward and reverse forms;
** various types: simple expressions.
** Note: will cause some compiler warnings:
** -- Result of comparison is constant
** -- 'x_yyy' is defined but never used [not all defined values used]
**
** 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-rev51"
#include "compare-rev.h"
/* The indexes of compared values are kept the same across different types */
static int stat_i[16] = {
-32767-1, -32767, -257, -256, -255, -1, 0, 1, 255, 256, 257, 32766, 32767, 0, 0, 0
};
static unsigned stat_u[16] = {
0, 0, 0, 0, 0, -1U, 0U, 1U, 255U, 256U, 257U, 32766U, 32767U, 32768U, 65534U, 65535U
};
static unsigned char stat_uc[16] = {
0, 0, 0, 0, 0, 0, 0, 1, 255, 0, 0, 0, 0, 0, 0, 0
};
/* The indexes of compared values */
static unsigned char x_m32768 = 0;
static unsigned char x_m32767 = 1;
static unsigned char x_m257 = 2;
static unsigned char x_m256 = 3;
static unsigned char x_m255 = 4;
static unsigned char x_m1 = 5;
static unsigned char x_0 = 6;
static unsigned char x_1 = 7;
static unsigned char x_255 = 8;
static unsigned char x_256 = 9;
static unsigned char x_257 = 10;
static unsigned char x_32766 = 11;
static unsigned char x_32767 = 12;
static unsigned char x_32768 = 13;
static unsigned char x_65534 = 14;
static unsigned char x_65535 = 15;
/* Compared values are static arrays. The actual types used in comparisons
** are controlled here by the defines.
*/
#define N32768 stat_i[x_m32768]
#define N32767 stat_i[x_m32767]
#define N257 stat_i[x_m257]
#define N256 stat_i[x_m256]
#define N255 stat_i[x_m255]
#define N1 stat_i[x_m1]
#define ZERO stat_i[x_0]
#define P1 stat_uc[x_1]
#define P255 stat_uc[x_255]
#define U255 stat_u[x_255]
#define P256 stat_i[x_256]
#define U256 stat_u[x_256]
#define P257 stat_i[x_257]
#define U257 stat_u[x_257]
#define P32766 stat_i[x_32766]
#define P32767 stat_i[x_32767]
#define U32767 stat_u[x_32767]
#define U32768 stat_u[x_32768]
#define U65534 stat_u[x_65534]
#define U65535 stat_u[x_65535]
/* signed int to static arrays compares */
/* General form: if ((loc + 1) >= array[x_val]) */
static void sint_expr_to_statarr_11(void)
{
#define v (loc + 1)
signed int loc;
loc = -32767-1; /* +1 = -32767 */
marker = 0x1100; /* +8 for each macro */
MUST_BE_EQUAL(v, N32767);
MUST_BE_LESS_THAN(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P32767);
}
static void sint_expr_to_statarr_13(void)
{
#define v (loc + 1)
signed int loc;
loc = -32767; /* +1 = -32766 */
marker = 0x1300; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N32767);
MUST_BE_LESS_THAN(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P256);
MUST_BE_LESS_THAN(v, P32766);
}
static void sint_expr_to_statarr_15(void)
{
#define v (loc + 1)
signed int loc;
loc = -258; /* +1 = 257 */
marker = 0x1500; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N32767);
MUST_BE_EQUAL(v, N257);
MUST_BE_LESS_THAN(v, N256);
MUST_BE_LESS_THAN(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P32766);
}
static void sint_expr_to_statarr_17(void)
{
#define v (loc + 1)
signed int loc;
loc = -257; /* +1 = 256 */
marker = 0x1700; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N32767);
MUST_BE_EQUAL(v, N256);
MUST_BE_LESS_THAN(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P32767);
}
static void schar_expr_to_statarr_19(void)
{
#define v (loc + 1)
signed char loc;
loc = -3; /* +1 = -2 */
marker = 0x1900; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N257);
MUST_BE_LESS_THAN(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P32766);
}
static void sint_expr_to_statarr_1B(void)
{
#define v (loc + 1)
signed int loc;
loc = -2; /* +1 = -1 */
marker = 0x1B00; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N255);
MUST_BE_EQUAL(v, N1);
MUST_BE_LESS_THAN(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P32767);
}
static void schar_expr_to_statarr_1D(void)
{
#define v (loc + 1)
signed char loc;
loc = -1; /* +1 = 0 */
marker = 0x1D00; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N255);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_EQUAL(v, ZERO);
MUST_BE_LESS_THAN(v, P1);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
MUST_BE_LESS_THAN(v, U257);
MUST_BE_LESS_THAN(v, U32768);
}
static void uchar_expr_to_statarr_1F(void)
{
#define v (loc + 1)
unsigned char loc;
loc = 0; /* +1 = 1 */
marker = 0x1F00; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N257);
MUST_BE_GREATER_THAN(v, N256);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_EQUAL(v, P1);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, P256);
MUST_BE_LESS_THAN(v, U257);
MUST_BE_LESS_THAN(v, P32766);
}
static void uchar_expr_to_statarr_21(void)
{
#define v (loc + 1)
unsigned char loc;
loc = 1; /* +1 = 2 */
marker = 0x2100; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N32767);
MUST_BE_GREATER_THAN(v, N257);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_GREATER_THAN(v, P1);
MUST_BE_LESS_THAN(v, P255);
MUST_BE_LESS_THAN(v, U256);
MUST_BE_LESS_THAN(v, U257);
MUST_BE_LESS_THAN(v, U32768);
}
static void uchar_expr_to_statarr_23(void)
{
#define v (loc + 1)
unsigned char loc;
loc = 254; /* +1 = 255 */
marker = 0x2300; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N257);
MUST_BE_GREATER_THAN(v, N256);
MUST_BE_GREATER_THAN(v, N255);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_GREATER_THAN(v, P1);
MUST_BE_EQUAL(v, P255);
MUST_BE_LESS_THAN(v, P256);
MUST_BE_LESS_THAN(v, U256);
MUST_BE_LESS_THAN(v, U257);
}
static void sint_expr_to_statarr_25(void)
{
#define v (loc + 1)
signed int loc;
loc = 255; /* +1 = 256 */
marker = 0x2500; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, N256);
MUST_BE_GREATER_THAN(v, N1);
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_GREATER_THAN(v, P1);
MUST_BE_GREATER_THAN(v, U255);
MUST_BE_EQUAL(v, P256);
MUST_BE_LESS_THAN(v, P257);
MUST_BE_LESS_THAN(v, P32766);
}
static void uint_expr_to_statarr_27(void)
{
#define v (loc + 1)
unsigned int loc;
loc = 256; /* +1 = 257 */
marker = 0x2700; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_GREATER_THAN(v, P1);
MUST_BE_GREATER_THAN(v, P255);
MUST_BE_GREATER_THAN(v, P256);
MUST_BE_EQUAL(v, U257);
MUST_BE_LESS_THAN(v, P32767);
MUST_BE_LESS_THAN(v, U32768);
}
static void uint_expr_to_statarr_29(void)
{
#define v (loc + 1)
unsigned int loc;
loc = 32766; /* +1 = 32767 */
marker = 0x2900; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_GREATER_THAN(v, P1);
MUST_BE_GREATER_THAN(v, P255);
MUST_BE_GREATER_THAN(v, U255);
MUST_BE_GREATER_THAN(v, P257);
MUST_BE_GREATER_THAN(v, P32766);
MUST_BE_EQUAL(v, P32767);
MUST_BE_LESS_THAN(v, U32768);
MUST_BE_LESS_THAN(v, U65535);
}
static void uint_expr_to_statarr_2B(void)
{
#define v (loc + 1)
unsigned int loc;
loc = 32767; /* +1 = 32768 */
marker = 0x2B00; /* +8 for each macro */
MUST_BE_GREATER_THAN(v, ZERO);
MUST_BE_GREATER_THAN(v, P1);
MUST_BE_GREATER_THAN(v, P255);
MUST_BE_GREATER_THAN(v, U256);
MUST_BE_GREATER_THAN(v, P32767);
MUST_BE_EQUAL(v, U32768);
MUST_BE_LESS_THAN(v, U65534);
MUST_BE_LESS_THAN(v, U65535);
}
int main(void)
{
marker = 0x01;
sint_expr_to_statarr_11();
sint_expr_to_statarr_13();
sint_expr_to_statarr_15();
sint_expr_to_statarr_17();
schar_expr_to_statarr_19();
sint_expr_to_statarr_1B();
schar_expr_to_statarr_1D();
uchar_expr_to_statarr_1F();
uchar_expr_to_statarr_21();
uchar_expr_to_statarr_23();
sint_expr_to_statarr_25();
uint_expr_to_statarr_27();
uint_expr_to_statarr_29();
uint_expr_to_statarr_2B();
printf(TEST_NAME " failures: %d\n", failures);
return failures ? EXIT_FAILURE : EXIT_SUCCESS;
}