remove support for non-ANSI compilation

*** 22,40 ****
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
  
  /*
   * Copyright (c) 1996, by Sun Microsystems, Inc.
   * All Rights Reserved
   */
  
  #ifndef _NAN_H
  #define _NAN_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  /*
   * Handling of Not_a_Number's (only in IEEE floating-point standard)
   */
  
  #include <sys/isa_defs.h>
--- 22,40 ----
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
  
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright (c) 1996, by Sun Microsystems, Inc.
   * All Rights Reserved
   */
  
  #ifndef _NAN_H
  #define _NAN_H
  
  /*
   * Handling of Not_a_Number's (only in IEEE floating-point standard)
   */
  
  #include <sys/isa_defs.h>
*** 118,132 ****
   * GETNaNPC gets the leftmost 32 bits of the fraction part
   */
  #define GETNaNPC(dval)  (((dnan *)&(dval))->inf_parts.bits << 12 | \
                              ((dnan *)&(dval))->nan_parts.fraction_low >> 20)
  
- #if defined(__STDC__)
  #define KILLFPE()       (void) _kill(_getpid(), 8)
- #else
- #define KILLFPE()       (void) kill(getpid(), 8)
- #endif
  #define NaN(X)          (((dnan *)&(X))->nan_parts.exponent == 0x7ff)
  #define KILLNaN(X)      if (NaN(X)) KILLFPE()
  
  #else   /* defined(_IEEE_754) */
  /* #error is strictly ansi-C, but works as well as anything for K&R systems. */
--- 118,128 ----