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Use 64-bits literals to forge 64-bits literals

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This commit is contained in:
Benoit Blanchon
2023-02-22 11:40:08 +01:00
parent 0f8698e655
commit 26948cb83a
2 changed files with 49 additions and 44 deletions
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85
src/ArduinoJson/Numbers/FloatTraits.hpp
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@@ -50,68 +50,65 @@ struct FloatTraits<T, 8 /*64bits*/> {
static T positiveBinaryPowerOfTen(int index) { static T positiveBinaryPowerOfTen(int index) {
ARDUINOJSON_DEFINE_PROGMEM_ARRAY( // ARDUINOJSON_DEFINE_PROGMEM_ARRAY( //
uint32_t, factors, uint64_t, factors,
{ {
0x40240000, 0x00000000, // 1e1 0x4024000000000000, // 1e1
0x40590000, 0x00000000, // 1e2 0x4059000000000000, // 1e2
0x40C38800, 0x00000000, // 1e4 0x40C3880000000000, // 1e4
0x4197D784, 0x00000000, // 1e8 0x4197D78400000000, // 1e8
0x4341C379, 0x37E08000, // 1e16 0x4341C37937E08000, // 1e16
0x4693B8B5, 0xB5056E17, // 1e32 0x4693B8B5B5056E17, // 1e32
0x4D384F03, 0xE93FF9F5, // 1e64 0x4D384F03E93FF9F5, // 1e64
0x5A827748, 0xF9301D32, // 1e128 0x5A827748F9301D32, // 1e128
0x75154FDD, 0x7F73BF3C // 1e256 0x75154FDD7F73BF3C, // 1e256
}); });
return forge(pgm_read(factors + 2 * index), return forge(pgm_read(factors + index));
pgm_read(factors + 2 * index + 1));
} }
static T negativeBinaryPowerOfTen(int index) { static T negativeBinaryPowerOfTen(int index) {
ARDUINOJSON_DEFINE_PROGMEM_ARRAY( // ARDUINOJSON_DEFINE_PROGMEM_ARRAY( //
uint32_t, factors, uint64_t, factors,
{ {
0x3FB99999, 0x9999999A, // 1e-1 0x3FB999999999999A, // 1e-1
0x3F847AE1, 0x47AE147B, // 1e-2 0x3F847AE147AE147B, // 1e-2
0x3F1A36E2, 0xEB1C432D, // 1e-4 0x3F1A36E2EB1C432D, // 1e-4
0x3E45798E, 0xE2308C3A, // 1e-8 0x3E45798EE2308C3A, // 1e-8
0x3C9CD2B2, 0x97D889BC, // 1e-16 0x3C9CD2B297D889BC, // 1e-16
0x3949F623, 0xD5A8A733, // 1e-32 0x3949F623D5A8A733, // 1e-32
0x32A50FFD, 0x44F4A73D, // 1e-64 0x32A50FFD44F4A73D, // 1e-64
0x255BBA08, 0xCF8C979D, // 1e-128 0x255BBA08CF8C979D, // 1e-128
0x0AC80628, 0x64AC6F43 // 1e-256 0x0AC8062864AC6F43 // 1e-256
}); });
return forge(pgm_read(factors + 2 * index), return forge(pgm_read(factors + index));
pgm_read(factors + 2 * index + 1));
} }
static T negativeBinaryPowerOfTenPlusOne(int index) { static T negativeBinaryPowerOfTenPlusOne(int index) {
ARDUINOJSON_DEFINE_PROGMEM_ARRAY( // ARDUINOJSON_DEFINE_PROGMEM_ARRAY( //
uint32_t, factors, uint64_t, factors,
{ {
0x3FF00000, 0x00000000, // 1e0 0x3FF0000000000000, // 1e0
0x3FB99999, 0x9999999A, // 1e-1 0x3FB999999999999A, // 1e-1
0x3F50624D, 0xD2F1A9FC, // 1e-3 0x3F50624DD2F1A9FC, // 1e-3
0x3E7AD7F2, 0x9ABCAF48, // 1e-7 0x3E7AD7F29ABCAF48, // 1e-7
0x3CD203AF, 0x9EE75616, // 1e-15 0x3CD203AF9EE75616, // 1e-15
0x398039D6, 0x65896880, // 1e-31 0x398039D665896880, // 1e-31
0x32DA53FC, 0x9631D10D, // 1e-63 0x32DA53FC9631D10D, // 1e-63
0x25915445, 0x81B7DEC2, // 1e-127 0x2591544581B7DEC2, // 1e-127
0x0AFE07B2, 0x7DD78B14 // 1e-255 0x0AFE07B27DD78B14 // 1e-255
}); });
return forge(pgm_read(factors + 2 * index), return forge(pgm_read(factors + index));
pgm_read(factors + 2 * index + 1));
} }
static T nan() { static T nan() {
return forge(0x7ff80000, 0x00000000); return forge(0x7ff8000000000000);
} }
static T inf() { static T inf() {
return forge(0x7ff00000, 0x00000000); return forge(0x7ff0000000000000);
} }
static T highest() { static T highest() {
return forge(0x7FEFFFFF, 0xFFFFFFFF); return forge(0x7FEFFFFFFFFFFFFF);
} }
template <typename TOut> // int64_t template <typename TOut> // int64_t
@@ -119,7 +116,7 @@ struct FloatTraits<T, 8 /*64bits*/> {
typename enable_if<is_integral<TOut>::value && is_signed<TOut>::value && typename enable_if<is_integral<TOut>::value && is_signed<TOut>::value &&
sizeof(TOut) == 8, sizeof(TOut) == 8,
signed>::type* = 0) { signed>::type* = 0) {
return forge(0x43DFFFFF, 0xFFFFFFFF); // 9.2233720368547748e+18 return forge(0x43DFFFFFFFFFFFFF); // 9.2233720368547748e+18
} }
template <typename TOut> // uint64_t template <typename TOut> // uint64_t
@@ -127,18 +124,18 @@ struct FloatTraits<T, 8 /*64bits*/> {
typename enable_if<is_integral<TOut>::value && is_unsigned<TOut>::value && typename enable_if<is_integral<TOut>::value && is_unsigned<TOut>::value &&
sizeof(TOut) == 8, sizeof(TOut) == 8,
unsigned>::type* = 0) { unsigned>::type* = 0) {
return forge(0x43EFFFFF, 0xFFFFFFFF); // 1.8446744073709549568e+19 return forge(0x43EFFFFFFFFFFFFF); // 1.8446744073709549568e+19
} }
static T lowest() { static T lowest() {
return forge(0xFFEFFFFF, 0xFFFFFFFF); return forge(0xFFEFFFFFFFFFFFFF);
} }
// constructs a double floating point values from its binary representation // constructs a double floating point values from its binary representation
// we use this function to workaround platforms with single precision literals // we use this function to workaround platforms with single precision literals
// (for example, when -fsingle-precision-constant is passed to GCC) // (for example, when -fsingle-precision-constant is passed to GCC)
static T forge(uint32_t msb, uint32_t lsb) { static T forge(uint64_t bits) {
return alias_cast<T>((uint64_t(msb) << 32) | lsb); return alias_cast<T>(bits);
} }
}; };

8
src/ArduinoJson/Polyfills/pgmspace_generic.hpp
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@@ -28,6 +28,14 @@ inline const T* pgm_read(const T* const* p) {
inline uint32_t pgm_read(const uint32_t* p) { inline uint32_t pgm_read(const uint32_t* p) {
return pgm_read_dword(p); return pgm_read_dword(p);
} }
template <typename T>
inline T pgm_read(const T* p) {
T result;
memcpy_P(&result, p, sizeof(T));
return result;
}
#else #else
# ifndef ARDUINOJSON_DEFINE_PROGMEM_ARRAY # ifndef ARDUINOJSON_DEFINE_PROGMEM_ARRAY