code: def mpf_pos(s, prec=0, rnd=round_fast):
      """Calculate 0+s for a raw mpf (i.e., just round s to the specified
      precision)."""
      if prec:
          sign, man, exp, bc = s
          if (not man) and exp:
              return s
          return normalize1(sign, man, exp, bc, prec, rnd)
      return s
  
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 35 for calling a global function with example usage: mpf_pos(s, prec, rnd) and returns: s, normalize1, s