Fix some warnings by casting

for compilers which cannot detect the affectations as ok.

m-genint.h

@@ -114,7 +114,7 @@ genint_init(genint_t s, unsigned int n)
   }
   s->n = n;
   s->data = ptr;
-  s->max = alloc-1;
+  s->max = (unsigned int) (alloc-1);
   s->mask0 = (index == 0) ? -GENINT_ONE : ~((GENINT_ONE<<(GENINT_LIMBSIZE-index))-1);
   s->mask_master = (((GENINT_ONE << alloc) - 1) << (GENINT_LIMBSIZE-alloc)) >> GENINT_ABA_CPT;
   atomic_init (&s->master, (genint_limb_t)0);

m-serial-bin.h

@@ -160,13 +160,13 @@ m_serial_bin_write_float(m_serial_write_t serial, const long double data, const
   
   FILE *f = (FILE *)serial->data[0].p;
   if (size_of_type == sizeof f1) {
-    f1 = data;
+    f1 = (float) data;
     n = fwrite (M_ASSIGN_CAST(const void*, &f1), sizeof f1, 1, f);
   } else if (size_of_type == sizeof f2) {
-    f2 = data;
+    f2 = (double) data;
     n = fwrite (M_ASSIGN_CAST(const void*, &f2), sizeof f2, 1, f);
   } else if (size_of_type == sizeof f3) {
-    f3 = data;
+    f3 = (long double) data;
     n = fwrite (M_ASSIGN_CAST(const void*, &f3), sizeof f3, 1, f);
   } else {
     M_ASSERT_INIT(false, "a float of suitable size");

m-shared.h

@@ -366,7 +366,7 @@ static inline int sharedi_integer_cref(int *p) { return *p; }
       M_CALL_INIT(oplist, s->buffer[i].x);                              \
       atomic_init (&s->buffer[i].cpt, 0U);                              \
     }                                                                   \
-    genint_init(s->core, n);                                            \
+    genint_init(s->core, (unsigned int) n);                             \
     SHAREDI_RESOURCE_CONTRACT(s);                                       \
   }                                                                     \
                                                                         \