Document the BN library.

1 files changed, 37 insertions, 0 deletions

diff --git a/doc/crypto/BN_num_bytes.pod b/doc/crypto/BN_num_bytes.pod
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+++ b/doc/crypto/BN_num_bytes.pod
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+=pod
+
+=head1 NAME
+
+BN_num_bits, BN_num_bytes, BN_num_bits_word - Get BIGNUM size
+
+=head1 SYNOPSIS
+
+ #include <openssl/bn.h>
+
+ int BN_num_bytes(const BIGNUM *a);
+
+ int BN_num_bits(const BIGNUM *a);
+
+ int BN_num_bits_word(BN_ULONG w);
+
+=head1 DESCRIPTION
+
+These functions return the size of a B<BIGNUM> in bytes or bits,
+and the size of an unsigned integer in bits.
+
+BN_num_bytes() is a macro.
+
+=head1 RETURN VALUES
+
+The size.
+
+=head1 SEE ALSO
+
+bn(3)
+
+=head1 HISTORY
+
+BN_num_bytes(), BN_num_bits() and BN_num_bits_word() are available in
+all versions of SSLeay and OpenSSL.
+
+=cut