Update docs.

[openssl.git] / doc / crypto / BN_CTX_new.pod

diff --git a/doc/crypto/BN_CTX_new.pod b/doc/crypto/BN_CTX_new.pod
index 45c70fd4079e987a3d91815ecdbbeb88f088f975..37a188e3c3d643def02fb846c28dd4b6f275f55a 100644 (file)
--- a/doc/crypto/BN_CTX_new.pod
+++ b/doc/crypto/BN_CTX_new.pod
@@ -16,12 +16,12 @@ BN_CTX_new, BN_CTX_init, BN_CTX_free - allocate and free BN_CTX structures
 
 =head1 DESCRIPTION
 
-A B<BN_CTX> is a structure that holds temporary variables used by
-library functions. Thus, it can be avoided to create and destroy
-the temporary B<BIGNUM> objects whenever a library function is
-called.
+A B<BN_CTX> is a structure that holds B<BIGNUM> temporary variables used by
+library functions. Since dynamic memory allocation to create B<BIGNUM>s
+is rather expensive when used in conjunction with repeated subroutine
+calls, the B<BN_CTX> structure is used.
 
-BN_CTX_new() allocated and initializes a B<BN_CTX>
+BN_CTX_new() allocates and initializes a B<BN_CTX>
 structure. BN_CTX_init() initializes an existing uninitialized
 B<BN_CTX>.