Make format strings for bignums, like |BN_DEC_FMT1|, visible.

Change-Id: If9641b3367a2bc155d97fe4ee72eb971b088bae0
Reviewed-on: https://boringssl-review.googlesource.com/4602
Reviewed-by: Adam Langley <agl@google.com>

crypto/bn/internal.h

@@ -131,8 +131,6 @@
 #define __STDC_FORMAT_MACROS
 #endif
 
-#include <inttypes.h>
-
 #if defined(OPENSSL_X86_64) && defined(_MSC_VER) && _MSC_VER >= 1400
 #pragma warning(push, 3)
 #include <intrin.h>
@@ -167,10 +165,7 @@ BIGNUM *bn_expand(BIGNUM *bn, unsigned bits);
 #define BN_MASK2h1	(0xffffffff80000000L)
 #define BN_TBIT		(0x8000000000000000L)
 #define BN_DEC_CONV	(10000000000000000000UL)
-#define BN_DEC_FMT1	"%" PRIu64
-#define BN_DEC_FMT2	"%019" PRIu64
 #define BN_DEC_NUM	19
-#define BN_HEX_FMT1	"%" PRIx64
 
 #elif defined(OPENSSL_32_BIT)
 
@@ -187,10 +182,7 @@ BIGNUM *bn_expand(BIGNUM *bn, unsigned bits);
 #define BN_MASK2h	(0xffff0000L)
 #define BN_TBIT		(0x80000000L)
 #define BN_DEC_CONV	(1000000000L)
-#define BN_DEC_FMT1	"%" PRIu32
-#define BN_DEC_FMT2	"%09" PRIu32
 #define BN_DEC_NUM	9
-#define BN_HEX_FMT1	"%" PRIx32
 
 #else
 #error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"

include/openssl/bn.h

@@ -126,6 +126,7 @@
 #include <openssl/base.h>
 #include <openssl/thread.h>
 
+#include <inttypes.h>  /* for PRIu64 and friends */
 #include <stdio.h>  /* for FILE* */
 
 #if defined(__cplusplus)
@@ -142,9 +143,15 @@ extern "C" {
 #if defined(OPENSSL_64_BIT)
 #define BN_ULONG uint64_t
 #define BN_BITS2 64
+#define BN_DEC_FMT1	"%" PRIu64
+#define BN_DEC_FMT2	"%019" PRIu64
+#define BN_HEX_FMT1	"%" PRIx64
 #elif defined(OPENSSL_32_BIT)
 #define BN_ULONG uint32_t
 #define BN_BITS2 32
+#define BN_DEC_FMT1	"%" PRIu32
+#define BN_DEC_FMT2	"%09" PRIu32
+#define BN_HEX_FMT1	"%" PRIx32
 #else
 #error "Must define either OPENSSL_32_BIT or OPENSSL_64_BIT"
 #endif