1#include <float.h> 2 3long double dfrom = 1.1L; 4long double m1; 5long double m2; 6unsigned long mant_long; 7 8int main() 9{ 10 /* Some targets don't support a conforming long double type. This is 11 common with very small parts which set long double == float. Look 12 to see if the type has at least 32 bits of precision. */ 13 if (LDBL_EPSILON > 0x1p-31L) 14 return 0; 15 16 m1 = dfrom / 2.0L; 17 m2 = m1 * 4294967296.0L; 18 mant_long = ((unsigned long) m2) & 0xffffffff; 19 20 if (mant_long == 0x8ccccccc) 21 return 0; 22 else 23 abort(); 24} 25