mirror of https://github.com/cc65/cc65.git
220 lines
2.8 KiB
C
220 lines
2.8 KiB
C
/*
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!!DESCRIPTION!! Subtraction Test
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!!ORIGIN!! SDCC regression tests
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!!LICENCE!! GPL, read COPYING.GPL
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*/
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#include <stdio.h>
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#include <limits.h>
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unsigned char failures=0;
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int int0 = 5;
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unsigned int int1 = 5;
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void pre_dec_test(void)
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{
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if(int0 != 5)
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failures++;
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if(int1 != 5)
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failures++;
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--int0;
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--int1;
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if(int0 != 4)
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failures++;
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if(int1 != 4)
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failures++;
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--int0;
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--int1;
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--int0;
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--int1;
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--int0;
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--int1;
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--int0;
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--int1;
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if(int0 != 0)
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failures++;
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if(int1 != 0)
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failures++;
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--int0;
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--int1;
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if(int0 != -1)
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failures++;
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if(int1 != 65535U)
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failures++;
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}
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void post_dec_test(void)
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{
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if(int0 != 5)
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failures++;
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if(int1 != 5)
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failures++;
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int0--;
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int1--;
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if(int0 != 4)
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failures++;
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if(int1 != 4)
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failures++;
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int0--;
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int1--;
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int0--;
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int1--;
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int0--;
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int1--;
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int0--;
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int1--;
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if(int0 != 0)
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failures++;
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if(int1 != 0)
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failures++;
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int0--;
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int1--;
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if(int0 != -1)
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failures++;
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if(int1 != 65535U)
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failures++;
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}
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void pre_dec_assign_test(void)
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{
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int a;
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unsigned int b;
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if(int0 != 5)
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failures++;
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if(int1 != 5)
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failures++;
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a = --int0;
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b = --int1;
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if(int0 != 4 || a != int0)
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failures++;
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if(int1 != 4 || b != int1)
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failures++;
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a = --int0;
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b = --int1;
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a = --int0;
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b = --int1;
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a = --int0;
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b = --int1;
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a = --int0;
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b = --int1;
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if(int0 != 0 || a != int0)
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failures++;
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if(int1 != 0 || b != int1)
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failures++;
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a = --int0;
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b = --int1;
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if(int0 != -1 || a != int0)
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failures++;
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if(int1 != 65535U || b != int1)
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failures++;
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}
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void post_dec_assign_test(void)
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{
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int a;
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unsigned int b;
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if(int0 != 5)
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failures++;
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if(int1 != 5)
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failures++;
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a = int0--;
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b = int1--;
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if(int0 != 4 || a != 5)
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failures++;
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if(int1 != 4 || b != 5)
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failures++;
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a = int0--;
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b = int1--;
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a = int0--;
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b = int1--;
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a = int0--;
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b = int1--;
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a = int0--;
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b = int1--;
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if(int0 != 0 || a != 1)
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failures++;
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if(int1 != 0 || b != 1)
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failures++;
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a = int0--;
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b = int1--;
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if(int0 != -1 || a != 0)
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failures++;
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if(int1 != 65535U || b != 0)
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failures++;
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}
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void dex_tests(void) {
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static unsigned int a, b;
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a = 257;
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b = a - 1;
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if (b != 256) {
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printf("fail 257 => 256\n");
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failures++;
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}
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a = 256;
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b = a - 1;
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if (b != 255) {
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printf("fail 256 => 255\n");
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failures++;
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}
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a = 255;
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b = a - 1;
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if (b != 254) {
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printf("fail 255 => 254\n");
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failures++;
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}
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}
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int main(void)
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{
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int0 = 5;
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int1 = 5;
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pre_dec_test();
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int0 = 5;
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int1 = 5;
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post_dec_test();
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int0 = 5;
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int1 = 5;
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pre_dec_assign_test();
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int0 = 5;
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int1 = 5;
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post_dec_assign_test();
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dex_tests();
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printf("failures: %d\n",failures);
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return failures;
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}
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