56 lines
655 B
C++
56 lines
655 B
C++
#include "stdafx.h"
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#include "defs.h"
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void
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eval_isprime(void)
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{
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push(cadr(p1));
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eval();
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p1 = pop();
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if (isnonnegativeinteger(p1) && mprime(p1->u.q.a))
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push_integer(1);
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else
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push_integer(0);
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}
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static char *s[] = {
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// 0 and 1 are not prime numbers
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"isprime(0)",
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"0",
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"isprime(1)",
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"0",
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"isprime(13)",
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"1",
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"isprime(14)",
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"0",
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// from the Prime Curios web page
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"isprime(9007199254740991)",
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"0",
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// The largest prime that JavaScript supports
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"isprime(2^53 - 111)",
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"1",
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// misc. primes
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"isprime(2^50-71)",
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"1",
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"isprime(2^40-87)",
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"1",
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};
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void
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test_isprime(void)
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{
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test(__FILE__, s, sizeof s / sizeof (char *));
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}
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