/*
* By subtracting 65535 (2^16-1) we cancel the low order 15 bits
* of ULONG_MAX to avoid using imprecise floating point values.
- * The second condition is necessary to catch NaN values.
*/
- if (ufvalue >= (double)(ULONG_MAX - 65535) + 65536.0
- || !(ufvalue == ufvalue) /* NaN */) {
+ if (ufvalue >= (double)(ULONG_MAX - 65535) + 65536.0) {
/* Number too big */
return 0;
}
return r;
}
-extern double zero_value;
-double zero_value = 0.0;
-
static int test_big(void)
{
char buf[80];
- double d, z, inf, nan;
/* Test excessively big number. Should fail */
if (!TEST_int_eq(BIO_snprintf(buf, sizeof(buf),
"%f\n", 2 * (double)ULONG_MAX), -1))
return 0;
- d = 1.0;
- z = zero_value;
- inf = d / z;
- nan = z / z;
-
- /*
- * Test +/-inf, nan. Should fail.
- * Test +/-1.0, +/-0.0. Should work.
- */
- if (!TEST_int_eq(BIO_snprintf(buf, sizeof(buf),
- "%f", inf), -1)
- || !TEST_int_eq(BIO_snprintf(buf, sizeof(buf),
- "%f", -inf), -1)
- || !TEST_int_eq(BIO_snprintf(buf, sizeof(buf),
- "%f", nan), -1)
- || !TEST_int_eq(BIO_snprintf(buf, sizeof(buf),
- "%f", d), 8)
- || !TEST_str_eq(buf, "1.000000")
- || !TEST_int_eq(BIO_snprintf(buf, sizeof(buf),
- "%f", z), 8)
- || !TEST_str_eq(buf, "0.000000")
- || !TEST_int_eq(BIO_snprintf(buf, sizeof(buf),
- "%f", -d), 9)
- || !TEST_str_eq(buf, "-1.000000")
- || !TEST_int_eq(BIO_snprintf(buf, sizeof(buf),
- "%f", -z), 8)
- || !TEST_str_eq(buf, "0.000000"))
- return 0;
-
return 1;
}