src/runtime/fixnump.h

   1 /*
   2  * This software is part of the SBCL system. See the README file for
   3  * more information.
   4  *
   5  * This software is derived from the CMU CL system, which was
   6  * written at Carnegie Mellon University and released into the
   7  * public domain. The software is in the public domain and is
   8  * provided with absolutely no warranty. See the COPYING and CREDITS
   9  * files for more information.
  10  */
  11
  12 #ifndef _FIXNUMP_H
  13 #define _FIXNUMP_H
  14
  15 static inline int fixnump(lispobj obj) {
  16     return((obj &
  17             (LOWTAG_MASK &
  18              (~(EVEN_FIXNUM_LOWTAG|ODD_FIXNUM_LOWTAG))))
  19            == 0);
  20 }
  21
  22 #endif