Diffie-Hellman/Math: introduced the proposed changes by Alexander Kurpiers

addmod and submod are moved to the end of the math descriptor, in order
to be able to run existing software against a new version of ltc without need
to rebuild the software.

src/math/gmp_desc.c

@@ -449,8 +449,6 @@ const ltc_math_descriptor gmp_desc = {
    &gcd,
    &lcm,
 
-   &addmod,
-   &submod,
    &mulmod,
    &sqrmod,
    &invmod,
@@ -489,8 +487,10 @@ const ltc_math_descriptor gmp_desc = {
    &rsa_make_key,
    &rsa_exptmod,
 #else
-   NULL, NULL
+   NULL, NULL,
 #endif
+   &addmod,
+   &submod,
    
 };
 

src/math/ltm_desc.c

@@ -451,8 +451,6 @@ const ltc_math_descriptor ltm_desc = {
    &gcd,
    &lcm,
 
-   &addmod,
-   &submod,
    &mulmod,
    &sqrmod,
    &invmod,
@@ -491,8 +489,11 @@ const ltc_math_descriptor ltm_desc = {
    &rsa_make_key,
    &rsa_exptmod,
 #else
-   NULL, NULL
+   NULL, NULL,
 #endif
+   &addmod,
+   &submod,
+   
 };
 
 

src/math/tfm_desc.c

@@ -739,8 +739,6 @@ const ltc_math_descriptor tfm_desc = {
    &gcd,
    &lcm,
 
-   &addmod,
-   &submod,
    &mulmod,
    &sqrmod,
    &invmod,
@@ -784,8 +782,10 @@ const ltc_math_descriptor tfm_desc = {
    &rsa_make_key,
    &rsa_exptmod,
 #else
-   NULL, NULL
+   NULL, NULL,
 #endif
+   &addmod,
+   &submod,
    
 };