Get rid of clib in big int, introduce message api, add stringify message

c3_big_int.cpp

@@ -1,7 +1,6 @@
 // Copyright (c) 2019 Christoffer Lerno. All rights reserved.
 // Use of this source code is governed by the GNU LGPLv3.0 license
 // a copy of which can be found in the LICENSE file.
-#include <string.h>
 
 #define Set_BigInt_Arena(x) BigInt_Arena bigint_allocator(x)
 struct BigInt_Arena{
@@ -55,7 +54,7 @@ bigint_copy(Allocator *allocator, BigInt *src){
   dest.digit_count = src->digit_count;
 
   dest.digits = allocate_array(allocator, uint64_t, dest.digit_count);
-  memcpy(dest.digits, src->digits, sizeof(uint64_t) * dest.digit_count);
+  memory_copy(dest.digits, src->digits, sizeof(uint64_t) * dest.digit_count);
   return dest;
 }
 
@@ -186,7 +185,7 @@ void bigint_init_bigint(BigInt *dest, const BigInt *src)
   dest->is_negative = src->is_negative;
   dest->digit_count = src->digit_count;
   dest->digits = ALLOC_DIGITS(dest->digit_count);
-  memcpy(dest->digits, src->digits, sizeof(uint64_t) * dest->digit_count);
+  memory_copy(dest->digits, src->digits, sizeof(uint64_t) * dest->digit_count);
 }
 
 void bigint_negate(BigInt *dest, const BigInt *source)
@@ -329,7 +328,7 @@ void bigint_init_data(BigInt *dest, const uint64_t *digits, unsigned int digit_c
   dest->digit_count = digit_count;
   dest->is_negative = is_negative;
   dest->digits = ALLOC_DIGITS(digit_count);
-  memcpy(dest->digits, digits, sizeof(uint64_t) * digit_count);
+  memory_copy(dest->digits, digits, sizeof(uint64_t) * digit_count);
 
   normalize(dest);
 }
@@ -344,7 +343,7 @@ void bigint_init_bigfloat(BigInt *dest, const BigFloat *op) {
     if (dest->is_negative) {
         f128M_sub(&zero, &op->value, &abs_val);
     } else {
-        memcpy(&abs_val, &op->value, sizeof(float128_t));
+        memory_copy(&abs_val, &op->value, sizeof(float128_t));
     }
 
     float128_t max_u64;