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#include <float.h> // for LDBL_MANT_DIG, LDBL_MAX_EXP
#include <math.h> // for fdiml, isnan
#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long double fdiml(long double x, long double y)
{
return fdim(x, y);
}
#else
long double fdiml(long double x, long double y)
{
if (isnan(x))
return x;
if (isnan(y))
return y;
return x > y ? x - y : 0;
}
#endif
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