Remove data::hex_digits

include/fmt/format-inl.h

@@ -154,7 +154,6 @@ static constexpr uint64_t log10_2_significand = 0x4d104d427de7fbcc;
 
 #if __cplusplus < 201703L
 template <typename T> constexpr const char basic_data<T>::digits[][2];
-template <typename T> constexpr const char basic_data<T>::hex_digits[];
 template <typename T> constexpr const unsigned basic_data<T>::prefixes[];
 #endif
 
@@ -916,8 +915,7 @@ inline uint64_t umul96_lower64(uint32_t x, uint64_t y) FMT_NOEXCEPT {
 inline int floor_log10_pow2(int e) FMT_NOEXCEPT {
   FMT_ASSERT(e <= 1700 && e >= -1700, "too large exponent");
   const int shift = 22;
-  return (e * static_cast<int>(log10_2_significand >> (64 - shift))) >>
-         shift;
+  return (e * static_cast<int>(log10_2_significand >> (64 - shift))) >> shift;
 }
 
 // Various fast log computations.
@@ -935,8 +933,7 @@ inline int floor_log10_pow2_minus_log10_4_over_3(int e) FMT_NOEXCEPT {
   FMT_ASSERT(e <= 1700 && e >= -1700, "too large exponent");
   const uint64_t log10_4_over_3_fractional_digits = 0x1ffbfc2bbc780375;
   const int shift_amount = 22;
-  return (e * static_cast<int>(log10_2_significand >>
-                               (64 - shift_amount)) -
+  return (e * static_cast<int>(log10_2_significand >> (64 - shift_amount)) -
           static_cast<int>(log10_4_over_3_fractional_digits >>
                            (64 - shift_amount))) >>
          shift_amount;

include/fmt/format.h

@@ -905,7 +905,6 @@ template <typename T = void> struct basic_data {
       {'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'}, {'9', '5'},
       {'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}};
 
-  FMT_API static constexpr const char hex_digits[] = "0123456789abcdef";
   FMT_API static constexpr const unsigned prefixes[4] = {0, 0, 0x1000000u | '+',
                                                          0x1000000u | ' '};
 };
@@ -1135,7 +1134,7 @@ FMT_CONSTEXPR auto format_uint(Char* buffer, UInt value, int num_digits,
   buffer += num_digits;
   Char* end = buffer;
   do {
-    const char* digits = upper ? "0123456789ABCDEF" : data::hex_digits;
+    const char* digits = upper ? "0123456789ABCDEF" : "0123456789abcdef";
     unsigned digit = (value & ((1 << BASE_BITS) - 1));
     *--buffer = static_cast<Char>(BASE_BITS < 4 ? static_cast<char>('0' + digit)
                                                 : digits[digit]);
@@ -1158,7 +1157,7 @@ auto format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits,
     auto p = buffer;
     for (int i = 0; i < char_digits; ++i) {
       unsigned digit = (value & ((1 << BASE_BITS) - 1));
-      *--p = static_cast<Char>(data::hex_digits[digit]);
+      *--p = static_cast<Char>("0123456789abcdef"[digit]);
       value >>= BASE_BITS;
     }
   }