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#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
/*
* Returns the factorial for the given unsigned 64-bit integer.
*
* Implemented in factorial.S
*/
int factorial(uint64_t n);
void test_factorial()
{
assert(factorial(0) == 0);
assert(factorial(1) == 1);
assert(factorial(2) == 2);
assert(factorial(3) == 6);
assert(factorial(4) == 24);
printf("factorial:\tOK\n");
}
/*
* Returns a pointer with the same given string but reversed. Note that the
* string cannot be in read-only space since the reversal is done in-place.
*
* Implemented in string.S
*/
char * reverse_string(char *str);
void test_reverse_string()
{
assert(reverse_string(NULL) == NULL);
assert(reverse_string("") == "");
char s1[] = "This is a string.";
assert(strcmp(reverse_string(s1), ".gnirts a si sihT") == 0);
char s2[] = ".";
assert(strcmp(reverse_string(s2), ".") == 0);
printf("reverse_string:\tOK\n");
}
/*
* Returns true if the given string is a palyndrome, false otherwise.
*
* Implemented in string.S
*/
bool is_palyndrome(char *str);
void test_is_palyndrome()
{
assert(is_palyndrome(NULL) == 0);
assert(is_palyndrome("") == 0);
assert(is_palyndrome("aba") == 1);
assert(is_palyndrome("aaa") == 1);
assert(is_palyndrome("This is a a si sihT") == 1);
printf("is_palyndrome:\tOK\n");
}
int main()
{
test_factorial();
test_reverse_string();
test_is_palyndrome();
}
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