Function getHalfNegative11

src/backend/cuda/kernel/random_engine.hpp:102–107

Generates rationals in (-1, 1]

// Generates rationals in (-1, 1]
__device__ static __half getHalfNegative11(uint num) {
    // convert to ushort before the min operation
    ushort v = min(max_int_before_infinity, ushort(num));
    return __hfma(__ushort2half_rn(v), SIGNED_HALF_FACTOR,
                  SIGNED_HALF_HALF_FACTOR);
}

// Generates rationals in (0, 1]
__device__ static float getFloat01(uint num) {