From cff7518117b7df6884d44414f64caaf7687f2e9b Mon Sep 17 00:00:00 2001
From: otto <>
Date: Thu, 25 Sep 2003 19:54:46 +0000
Subject: Use BN_is_zero(), not x->top == 0 to test if a BN is zero.

ok markus@ deraadt@
---
 src/lib/libcrypto/bn/bn_print.c         | 6 +++---
 src/lib/libssl/src/crypto/bn/bn_print.c | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

(limited to 'src/lib')

diff --git a/src/lib/libcrypto/bn/bn_print.c b/src/lib/libcrypto/bn/bn_print.c
index e3b6aa235b..ad80dab325 100644
--- a/src/lib/libcrypto/bn/bn_print.c
+++ b/src/lib/libcrypto/bn/bn_print.c
@@ -79,7 +79,7 @@ char *BN_bn2hex(const BIGNUM *a)
 		}
 	p=buf;
 	if (a->neg) *(p++)='-';
-	if (a->top == 0) *(p++)='0';
+	if (BN_is_zero(a)) *(p++)='0';
 	for (i=a->top-1; i >=0; i--)
 		{
 		for (j=BN_BITS2-8; j >= 0; j-=8)
@@ -123,7 +123,7 @@ char *BN_bn2dec(const BIGNUM *a)
 	p=buf;
 	lp=bn_data;
 	if (t->neg) *(p++)='-';
-	if (t->top == 0)
+	if (BN_is_zero(t))
 		{
 		*(p++)='0';
 		*(p++)='\0';
@@ -300,7 +300,7 @@ int BN_print(BIO *bp, const BIGNUM *a)
 	int ret=0;
 
 	if ((a->neg) && (BIO_write(bp,"-",1) != 1)) goto end;
-	if ((a->top == 0) && (BIO_write(bp,"0",1) != 1)) goto end;
+	if ((BN_is_zero(a)) && (BIO_write(bp,"0",1) != 1)) goto end;
 	for (i=a->top-1; i >=0; i--)
 		{
 		for (j=BN_BITS2-4; j >= 0; j-=4)
diff --git a/src/lib/libssl/src/crypto/bn/bn_print.c b/src/lib/libssl/src/crypto/bn/bn_print.c
index e3b6aa235b..ad80dab325 100644
--- a/src/lib/libssl/src/crypto/bn/bn_print.c
+++ b/src/lib/libssl/src/crypto/bn/bn_print.c
@@ -79,7 +79,7 @@ char *BN_bn2hex(const BIGNUM *a)
 		}
 	p=buf;
 	if (a->neg) *(p++)='-';
-	if (a->top == 0) *(p++)='0';
+	if (BN_is_zero(a)) *(p++)='0';
 	for (i=a->top-1; i >=0; i--)
 		{
 		for (j=BN_BITS2-8; j >= 0; j-=8)
@@ -123,7 +123,7 @@ char *BN_bn2dec(const BIGNUM *a)
 	p=buf;
 	lp=bn_data;
 	if (t->neg) *(p++)='-';
-	if (t->top == 0)
+	if (BN_is_zero(t))
 		{
 		*(p++)='0';
 		*(p++)='\0';
@@ -300,7 +300,7 @@ int BN_print(BIO *bp, const BIGNUM *a)
 	int ret=0;
 
 	if ((a->neg) && (BIO_write(bp,"-",1) != 1)) goto end;
-	if ((a->top == 0) && (BIO_write(bp,"0",1) != 1)) goto end;
+	if ((BN_is_zero(a)) && (BIO_write(bp,"0",1) != 1)) goto end;
 	for (i=a->top-1; i >=0; i--)
 		{
 		for (j=BN_BITS2-4; j >= 0; j-=4)
-- 
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