/* This may look like unnecessary jumping through hoops, but converting
   out of range floating point values to integers *is* undefined behaviour,
   and it is starting to bite.
*/
#ifndef CAST_INLINE
#define I_32(what) (cast_i32((NV)(what)))
#define U_32(what) (cast_ulong((NV)(what)))
#define I_V(what) (cast_iv((NV)(what)))
#define U_V(what) (cast_uv((NV)(what)))
#else
#define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
                  : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
                     : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
#define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
                  : ((n) < U32_MAX_P1 ? (U32) (n) \
                     : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
#define I_V(n) ((n) < IV_MAX_P1 ? ((n) < IV_MIN ? IV_MIN : (IV) (n)) \
                  : ((n) < UV_MAX_P1 ? (IV)(UV) (n) \
                     : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
#define U_V(n) ((n) < 0.0 ? ((n) < IV_MIN ? (UV) IV_MIN : (UV)(IV) (n)) \
                  : ((n) < UV_MAX_P1 ? (UV) (n) \
                     : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
#endif