changes from feedback

Author: devnexen

ext/gmp/gmp.c

@@ -1804,9 +1804,9 @@ ZEND_FUNCTION(gmp_random_bits)
 	}
 
 #if SIZEOF_SIZE_T == 4
-	const zend_long maxbits = ULONG_MAX / GMP_NUMB_BITS;
+	const zend_long maxbits = (ULONG_MAX / GMP_NUMB_BITS) / sizeof(mp_limb_t);
 #else
-	const zend_long maxbits = INT_MAX;
+	const zend_long maxbits = INT_MAX / sizeof(mp_limb_t);
 #endif
 
 	if (bits <= 0 || bits > maxbits) {
@@ -1817,7 +1817,7 @@ ZEND_FUNCTION(gmp_random_bits)
 	INIT_GMP_RETVAL(gmpnum_result);
 	gmp_init_random();
 
-	mpz_urandomb(gmpnum_result, GMPG(rand_state), (mp_bitcnt_t)bits);
+	mpz_urandomb(gmpnum_result, GMPG(rand_state), bits);
 }
 /* }}} */