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pack_inttosafefloat

float  pack_inttosafefloat(int i)

This is used to find the w component of a primitive uvw vector referring to a polygon soup primitive, from the inner polygon number.

  • Integers in the range abs(i) <= (2^24) = 16,777,216 will be represented exactly by the floats of the same value.
  • Integers in the range 16,777,216 < abs(i) < (2^24) + 104*(2^23) = 889,192,448 will be represented by larger, non-infinite floats.
  • Integers in the range 889,192,448 <= abs(i) < (2^24) + 230*(2^23) = 1,946,157,056 will be represented by small, non-denormal floats.
  • Any other integers, abs(i) >= 1,946,157,056, will not be represented correctly.