code: def to_fixed(s, prec):
      """Convert a raw mpf to a fixed-point big integer"""
      sign, man, exp, bc = s
      offset = exp + prec
      if sign:
          if offset >= 0:
              return (-man) << offset
          else:
              return (-man) >> (-offset)
      else:
          if offset >= 0:
              return man << offset
          else:
              return man >> (-offset)
  
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 25 for calling a global function with example usage: to_fixed(s, prec) and returns: unknown, unknown, unknown, unknown