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74 lines
1.2 KiB
C
74 lines
1.2 KiB
C
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/*
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!!DESCRIPTION!! Addition tests - mostly int's
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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 <stdlib.h>
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static unsigned int failures = 0;
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/*
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this test assumes:
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sizeof(long) == 4
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CAUTION: the wraparound behaviour is actually undefined, to get the "expected"
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behaviour with GCC, use -fwrapv or -fno-strict-overflow
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see: https://gcc.gnu.org/wiki/FAQ#signed_overflow
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*/
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#ifdef REFERENCE
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/*
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make sure the reference output uses types with
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proper size
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*/
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#include <stdint.h>
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int32_t long0 = 0;
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#else
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long long0 = 0;
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#endif
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void print(void)
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{
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#if defined(REFERENCE) && defined(REFCC_SIZEOF_LONG_64BIT)
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printf("long0: %d\n", long0);
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#else
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printf("long0: %ld\n", long0);
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#endif
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}
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int main(void)
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{
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long0 = 0x7f000000L;
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/* wrap around zero */
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print();
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long0 = long0 + 0x2000000L;
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if(long0 != -0x7f000000L) {
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printf("failed!\n");
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failures++;
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}
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print();
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long0 = 0x7f000000L;
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/* wrap around zero */
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print();
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long0 = long0 + 0x2000000L;
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print();
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if(long0 != -0x7f000000L) {
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printf("failed!\n");
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failures++;
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}
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print();
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return failures;
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}
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