*** 36,59 ****
   */
  
  #include "libm.h"
  #include <sys/isa_defs.h>
  
! #if defined(_BIG_ENDIAN)
  
  static const union {
          unsigned i[2];
          double d;
  } __nan_union = { 0x7fffffff, 0xffffffff };
  
! #else
  
  static const union {
          unsigned i[2];
          double d;
  } __nan_union = { 0xffffffff, 0x7fffffff };
  
  #endif
  
  /* ARGSUSED0 */
  double
  __nan(const char *c) {
--- 36,61 ----
   */
  
  #include "libm.h"
  #include <sys/isa_defs.h>
  
! #if defined(__sparc)
  
  static const union {
          unsigned i[2];
          double d;
  } __nan_union = { 0x7fffffff, 0xffffffff };
  
! #elif defined(__i386) || defined(__amd64)
  
  static const union {
          unsigned i[2];
          double d;
  } __nan_union = { 0xffffffff, 0x7fffffff };
  
+ #else
+ #error Unknown architecture
  #endif
  
  /* ARGSUSED0 */
  double
  __nan(const char *c) {