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/* test cases for floating point comparison transformations
* compile with -DFLOAT_TYPE=float
* or -DFLOAT_TYPE=double
* or -DFLOAT_TYPE="long double"
*/
#include <assert.h>
#define _GNU_SOURCE
#include <math.h> /* for NaNs and infinity values */
int main() {
volatile FLOAT_TYPE a, b;
#ifdef INFINITY
FLOAT_TYPE inf = (FLOAT_TYPE)INFINITY;
#else
FLOAT_TYPE inf = 1.0 / 0.0; /* produces infinity */
#endif
FLOAT_TYPE negZero = 1.0 / -inf;
FLOAT_TYPE posZero = 0.0;
/* plus infinity */
a = (1.0 / 0.0); /* positive infinity */
b = (1.0 / 0.0); /* positive infinity */
assert(!(a < b));
assert((a <= b));
assert(!(a > b));
assert((a >= b));
assert(!(a != b));
assert((a == b));
b = -(1.0 / 0.0); /* negative infinity */
assert(!(a < b));
assert(!(a <= b));
assert((a > b));
assert((a >= b));
assert((a != b));
assert(!(a == b));
b = 1.0 / -(1.0 / 0.0); /* negative 0 */
assert(!(a < b));
assert(!(a <= b));
assert((a > b));
assert((a >= b));
assert((a != b));
assert(!(a == b));
b = 0.0; /* positive 0 */
assert(!(a < b));
assert(!(a <= b));
assert((a > b));
assert((a >= b));
assert((a != b));
assert(!(a == b));
b = -42.0;
assert(!(a < b));
assert(!(a <= b));
assert((a > b));
assert((a >= b));
assert((a != b));
assert(!(a == b));
b = 42.0;
assert(!(a < b));
assert(!(a <= b));
assert((a > b));
assert((a >= b));
assert((a != b));
assert(!(a == b));
/* negative infinity */
a = -(1.0 / 0.0);
b = (1.0 / 0.0); /* positive infinity */
assert((a < b));
assert((a <= b));
assert(!(a > b));
assert(!(a >= b));
assert((a != b));
assert(!(a == b));
b = -(1.0 / 0.0); /* negative infinity */
assert(!(a < b));
assert((a <= b));
assert(!(a > b));
assert((a >= b));
assert(!(a != b));
assert((a == b));
b = 1.0 / -(1.0 / 0.0); /* negative 0 */
assert((a < b));
assert((a <= b));
assert(!(a > b));
assert(!(a >= b));
assert((a != b));
assert(!(a == b));
b = 0.0; /* positive 0 */
assert((a < b));
assert((a <= b));
assert(!(a > b));
assert(!(a >= b));
assert((a != b));
assert(!(a == b));
b = -42.0;
assert((a < b));
assert((a <= b));
assert(!(a > b));
assert(!(a >= b));
assert((a != b));
assert(!(a == b));
b = 42.0;
assert((a < b));
assert((a <= b));
assert(!(a > b));
assert(!(a >= b));
assert((a != b));
assert(!(a == b));
}
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