3 #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
4 long double floorl(long double x)
8 #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
9 #if LDBL_MANT_DIG == 64
11 #elif LDBL_MANT_DIG == 113
14 long double floorl(long double x)
16 union ldshape u = {x};
17 int e = u.i.se & 0x7fff;
20 if (e >= 0x3fff+LDBL_MANT_DIG-1 || x == 0)
22 /* y = int(x) - x, where int(x) is an integer neighbor of x */
24 y = x - TOINT + TOINT - x;
26 y = x + TOINT - TOINT - x;
27 /* special case because of non-nearest rounding modes */
30 return u.i.se >> 15 ? -1 : 0;