code: def from_rational(p, q, prec, rnd=round_fast):
      """Create a raw mpf from a rational number p/q, round if
      necessary."""
      return mpf_div(from_int(p), from_int(q), prec, rnd)
  
imports: import math
  from bisect import bisect
  import sys
  from .backend import MPZ, MPZ_TYPE, MPZ_ZERO, MPZ_ONE, MPZ_TWO, MPZ_FIVE, BACKEND, STRICT, HASH_MODULUS, HASH_BITS, gmpy, sage, sage_utils
  from .libintmath import giant_steps, trailtable, bctable, lshift, rshift, bitcount, trailing, sqrt_fixed, numeral, isqrt, isqrt_fast, sqrtrem, bin_to_radix
label_desc: Use image node_id 23 for calling a global function with example usage: from_rational(p, q, prec, rnd) and returns: mpf_div