diff --git a/include/fmt/format.h b/include/fmt/format.h
index d4951cb5..aae28016 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -3317,23 +3317,6 @@ FMT_CONSTEXPR20 void format_hexfloat(Float value, int precision,
   format_hexfloat(static_cast<double>(value), precision, specs, buf);
 }
 
-template <typename Float> FMT_CONSTEXPR auto iceil(Float value) -> int {
-  auto min = (std::numeric_limits<int>::min)();
-  auto max = (std::numeric_limits<int>::max)();
-  ignore_unused(min, max);
-  FMT_ASSERT(value >= min && value <= max, "value not in int range");
-  do {
-    auto mid = min + static_cast<int>((static_cast<unsigned>(max) -
-                                       static_cast<unsigned>(min)) /
-                                      2);
-    if (mid < value)
-      min = mid;
-    else
-      max = mid;
-  } while (min + 1 != max);
-  return max;
-}
-
 template <typename Float>
 FMT_CONSTEXPR20 auto format_float(Float value, int precision, float_specs specs,
                                   buffer<char>& buf) -> int {
@@ -3364,7 +3347,9 @@ FMT_CONSTEXPR20 auto format_float(Float value, int precision, float_specs specs,
     //   10^(exp - 1) <= value < 10^exp or 10^exp <= value < 10^(exp + 1).
     // This is based on log10(value) == log2(value) / log2(10) and approximation
     // of log2(value) by e + num_fraction_bits idea from double-conversion.
-    exp = iceil((f.e + count_digits<1>(f.f) - 1) * inv_log2_10 - 1e-10);
+    auto e = (f.e + count_digits<1>(f.f) - 1) * inv_log2_10 - 1e-10;
+    exp = static_cast<int>(e);
+    if (e > exp) ++exp;  // Compute ceil.
     dragon_flags = dragon::fixup;
   } else if (precision < 0) {
     // Use Dragonbox for the shortest format.
diff --git a/test/compile-fp-test.cc b/test/compile-fp-test.cc
index b93e46e3..5b46d74b 100644
--- a/test/compile-fp-test.cc
+++ b/test/compile-fp-test.cc
@@ -10,7 +10,7 @@
 
 #if defined(__cpp_lib_bit_cast) && __cpp_lib_bit_cast >= 201806 && \
     defined(__cpp_constexpr) && __cpp_constexpr >= 201907 &&       \
-    defined(__cpp_constexpr_dynamic_alloc) && !FMT_MSC_VERSION &&  \
+    defined(__cpp_constexpr_dynamic_alloc) &&                      \
     __cpp_constexpr_dynamic_alloc >= 201907 && FMT_CPLUSPLUS >= 202002L
 
 template <size_t max_string_length, typename Char = char> struct test_string {
diff --git a/test/format-impl-test.cc b/test/format-impl-test.cc
index cdd34164..35e9d568 100644
--- a/test/format-impl-test.cc
+++ b/test/format-impl-test.cc
@@ -523,18 +523,3 @@ TEST(format_impl_test, to_utf8) {
   EXPECT_EQ(s, u.str());
   EXPECT_EQ(s.size(), u.size());
 }
-
-TEST(format_impl_test, iceil) {
-  for (double v : std::initializer_list<double>{
-           ((std::numeric_limits<int>::min)() + 0.5),
-           -1.2,
-           -0.2,
-           0.0,
-           0.2,
-           1.2,
-           4.0,
-           ((std::numeric_limits<int>::max)() - 0.5),
-       }) {
-    EXPECT_EQ(fmt::detail::iceil(v), static_cast<int>(std::ceil(v)));
-  }
-}