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#ifdef __GNUC__
#include <fenv.h>
#include <assert.h>
float nondet_float();
int nondet_int();
float castWithRounding (int rounding_mode, int value)
{
int returnValue = fesetround(rounding_mode);
assert(returnValue == 0);
return (float)value;
}
#endif
int main(void)
{
#ifdef __GNUC__
float low = 0x1p+25f; // 33554432
float high = 0x1.000002p+25f; // 33554436
float higher = 0x1.000004p+25f;// 33554440
// There are no other floating point numbers between these
float other = nondet_float();
assert(!((low < other) && (other < high)));
// Inference tests
int x = nondet_int();
// x is 33554433, 33554434 or 33554435
__CPROVER_assume((33554432 < x) && (x < 33554436));
assert((castWithRounding(FE_TONEAREST,x) == high) ==
(x == 33554435));
#ifdef FE_UPWARD
assert(castWithRounding(FE_UPWARD,x) == high);
assert(castWithRounding(FE_UPWARD,-x) == -low);
#endif
#ifdef FE_DOWNWARD
assert(castWithRounding(FE_DOWNWARD,x) == low);
assert(castWithRounding(FE_DOWNWARD,-x) == -high);
#endif
assert(castWithRounding(FE_TOWARDZERO,x) == low);
assert(castWithRounding(FE_TOWARDZERO,-x) == -low);
#endif
}
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