diff --git a/fields.h b/fields.h
index 4541c947..656245e5 100644
--- a/fields.h
+++ b/fields.h
@@ -186,16 +186,18 @@ ATTR_CONST ATTR_ALWAYS_INLINE static inline bf64_t bf64_from_bit(uint8_t bit) {
   return bit & 1;
 }
 
-ATTR_PURE ATTR_ALWAYS_INLINE static inline bool bf128_eq(bf128_t a, bf128_t b) {
-    return memcmp(&a, &b, 16) == 0;
+ATTR_ALWAYS_INLINE static inline bool bf128_eq(bf128_t a, bf128_t b) {
+  return BF_VALUE(a, 0) == BF_VALUE(b, 0) && BF_VALUE(a, 1) == BF_VALUE(b, 1);
 }
 
-ATTR_PURE ATTR_ALWAYS_INLINE static inline bool bf192_eq(bf192_t a, bf192_t b) {
-    return memcmp(&a, &b, 24) == 0;
+ATTR_ALWAYS_INLINE static inline bool bf192_eq(bf192_t a, bf192_t b) {
+  return BF_VALUE(a, 0) == BF_VALUE(b, 0) && BF_VALUE(a, 1) == BF_VALUE(b, 1) &&
+         BF_VALUE(a, 2) == BF_VALUE(b, 2);
 }
 
-ATTR_PURE ATTR_ALWAYS_INLINE static inline bool bf256_eq(bf256_t a, bf256_t b) {
-    return memcmp(&a, &b, 32) == 0;
+ATTR_ALWAYS_INLINE static inline bool bf256_eq(bf256_t a, bf256_t b) {
+  return BF_VALUE(a, 0) == BF_VALUE(b, 0) && BF_VALUE(a, 1) == BF_VALUE(b, 1) &&
+         BF_VALUE(a, 3) == BF_VALUE(b, 3);
 }
 
 // GF(2^128) implementation