Change for building dtoa on 64-bit.

base/third_party/dmg_fp/dtoa.cc

 /****************************************************************
  *
  * The author of this software is David M. Gay.
  *
  * Copyright (c) 1991, 2000, 2001 by Lucent Technologies.
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose without fee is hereby granted, provided that this entire notice
  * is included in all copies of any software which is or includes a copy
  * or modification of this software and in all copies of the supporting
@@ skipping 165 matching lines @@
  *      to strtod.  This testing proceeds by initially truncating the
  *      input string, then if necessary comparing the whole string with
  *      a decimal expansion to decide close cases. This logic is only
  *      used for input more than STRTOD_DIGLIM digits long (default 40).
  */
 
 #define IEEE_8087
 #define NO_HEX_FP
 
 #ifndef Long
+#if __LP64__
+#define Long int
+#else
 #define Long long
 #endif
+#endif
 #ifndef ULong
 typedef unsigned Long ULong;
 #endif
 
 #ifdef DEBUG
 #include "stdio.h"
 #define Bug(x) {fprintf(stderr, "%s\n", x); exit(1);}
 #endif
 
 #include "stdlib.h"
@@ skipping 16 matching lines @@
 extern void *MALLOC(size_t);
 #endif
 #else
 #define MALLOC malloc
 #endif
 
 #ifndef Omit_Private_Memory
 #ifndef PRIVATE_MEM
 #define PRIVATE_MEM 2304
 #endif
-#define PRIVATE_mem ((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
+#define PRIVATE_mem ((unsigned)((PRIVATE_MEM+sizeof(double)-1)/sizeof(double)))
 static double private_mem[PRIVATE_mem], *pmem_next = private_mem;
 #endif
 
 #undef IEEE_Arith
 #undef Avoid_Underflow
 #ifdef IEEE_MC68k
 #define IEEE_Arith
 #endif
 #ifdef IEEE_8087
 #define IEEE_Arith
@@ skipping 3961 matching lines @@
 #endif
         Bfree(b);
         *s = 0;
         *decpt = k + 1;
         if (rve)
                 *rve = s;
         return s0;
         }
 
 }  // namespace dmg_fp