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shinhirota/add2.c

Last active February 28, 2017 05:03
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add2.c
#include <limits.h>
BOOL is_sum_overflow(long a, long b) {
if (a < LONG_MAX / 2) {
if (b < LONG_MAX / 2)
return FALSE;
else
return ((b - LONG_MAX / 2) + a > LONG_MAX / 2);
}
else {
if (b < LONG_MAX / 2)
return TRUE;
else
return ((a - LONG_MAX / 2) + b > LONG_MAX / 2);
}
}
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