Remove the dual-callback scheme for numeric and pointer thread IDs,

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

diff --git a/doc/crypto/bn_internal.pod b/doc/crypto/bn_internal.pod
index 9805a7c9f298f4b50d7f81f7fe509c5c888572e6..6b01e2570b48f0ee7633a885077e2eab44b45d01 100644 (file)
--- a/doc/crypto/bn_internal.pod
+++ b/doc/crypto/bn_internal.pod
@@ -13,6 +13,8 @@ library internal functions
 
 =head1 SYNOPSIS
 
+ #include <openssl/bn.h>
+
  BN_ULONG bn_mul_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w);
  BN_ULONG bn_mul_add_words(BN_ULONG *rp, BN_ULONG *ap, int num,
    BN_ULONG w);
@@ -72,19 +74,19 @@ applications.
 
  typedef struct bignum_st
         {
-        int top;      /* index of last used d (most significant word) */
-        BN_ULONG *d;  /* pointer to an array of 'BITS2' bit chunks */
+        int top;      /* number of words used in d */
+        BN_ULONG *d;  /* pointer to an array containing the integer value */
         int max;      /* size of the d array */
         int neg;      /* sign */
         } BIGNUM;
 
-The big number is stored in B<d>, a malloc()ed array of B<BN_ULONG>s,
-least significant first. A B<BN_ULONG> can be either 16, 32 or 64 bits
-in size (B<BITS2>), depending on the 'number of bits' specified in
+The integer value is stored in B<d>, a malloc()ed array of words (B<BN_ULONG>),
+least significant word first. A B<BN_ULONG> can be either 16, 32 or 64 bits
+in size, depending on the 'number of bits' (B<BITS2>) specified in
 C<openssl/bn.h>.
 
 B<max> is the size of the B<d> array that has been allocated.  B<top>
-is the 'last' entry being used, so for a value of 4, bn.d[0]=4 and
+is the number of words being used, so for a value of 4, bn.d[0]=4 and
 bn.top=1.  B<neg> is 1 if the number is negative.  When a B<BIGNUM> is
 B<0>, the B<d> field can be B<NULL> and B<top> == B<0>.
 
@@ -202,7 +204,7 @@ call bn_expand2(), which allocates a new B<d> array and copies the
 data.  They return B<NULL> on error, B<b> otherwise.
 
 The bn_fix_top() macro reduces B<a-E<gt>top> to point to the most
-significant non-zero word when B<a> has shrunk.
+significant non-zero word plus one when B<a> has shrunk.
 
 =head2 Debugging