Function LTintfloat

third-party/lua-5.5.0/src/lvm.c:426–436

** Check whether integer 'i' is less than float 'f'. If 'i' has an ** exact representation as a float ('l_intfitsf'), compare numbers as ** floats. Otherwise, use the equivalence 'i < f <=> i < ceil(f)'. ** If 'ceil(f)' is out of integer range, either 'f' is greater than ** all integers or less than all integers. ** (The test with 'l_intfitsf' is only for performance; the else ** case is correct f

** When 'f' is NaN, comparisons must result in false.
*/
l_sinline int LTintfloat (lua_Integer i, lua_Number f) {
  if (l_intfitsf(i))
    return luai_numlt(cast_num(i), f);  /* compare them as floats */
  else {  /* i < f <=> i < ceil(f) */
    lua_Integer fi;
    if (luaV_flttointeger(f, &fi, F2Iceil))  /* fi = ceil(f) */
      return i < fi;   /* compare them as integers */
    else  /* 'f' is either greater or less than all integers */
      return f > 0;  /* greater? */
  }
}


/*