bug fixes

src/big/big_float.cr

@@ -297,16 +297,16 @@ end
 # :nodoc:
 struct Crystal::Hasher
   def float(value : BigFloat)
-    # more exact version of `Math.frexp`
-    LibGMP.mpf_get_d_2exp(out exp, self)
-    frac = BigFloat.new do |mpf|
-      if exp >= 0
-        LibGMP.mpf_div_2exp(mpf, self, exp)
-      else
-        LibGMP.mpf_mul_2exp(mpf, self, -exp)
-      end
-    end
     permute(float_normalize_wrap(value) do |value|
+      # more exact version of `Math.frexp`
+      LibGMP.mpf_get_d_2exp(out exp, value)
+      frac = BigFloat.new do |mpf|
+        if exp >= 0
+          LibGMP.mpf_div_2exp(mpf, value, exp)
+        else
+          LibGMP.mpf_mul_2exp(mpf, value, -exp)
+        end
+      end
       float_normalize_reference(value, frac, exp)
     end)
   end

src/big/big_int.cr

@@ -560,12 +560,12 @@ struct Crystal::Hasher
   def int(value : BigInt)
     # it should calculate `remainder(HASH_MODULUS)`
     if LibGMP::ULong == UInt64
-      v = LibGMP.tdiv_ui(self, HASH_MODULUS).to_i64
-      self < 0 ? -v : v
-    elsif self >= HASH_MODULUS_INT_P || self <= HASH_MODULUS_INT_N
-      unsafe_truncated_mod(HASH_MODULUS_INT_P).to_i64
+      v = LibGMP.tdiv_ui(value, HASH_MODULUS).to_i64
+      value < 0 ? -v : v
+    elsif value >= HASH_MODULUS_INT_P || value <= HASH_MODULUS_INT_N
+      value.unsafe_truncated_mod(HASH_MODULUS_INT_P).to_i64
     else
-      to_i64
+      value.to_i64
     end
   end
 end

src/big/big_rational.cr

@@ -282,10 +282,10 @@ struct Crystal::Hasher
   private HASH_MODULUS_RAT_N = -BigRational.new((1_u64 << HASH_BITS) - 1)
 
   def float(value : BigRational)
-    rem = self
-    if self >= HASH_MODULUS_RAT_P || self <= HASH_MODULUS_RAT_N
-      num = numerator
-      denom = denominator
+    rem = value
+    if value >= HASH_MODULUS_RAT_P || value <= HASH_MODULUS_RAT_N
+      num = value.numerator
+      denom = value.denominator
       div = num.tdiv(denom)
       floor = div.tdiv(HASH_MODULUS)
       rem -= floor * HASH_MODULUS