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Moved float tables to PROGMEM

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This commit is contained in:
Benoit Blanchon
2020-09-19 09:37:05 +02:00
parent c3504ddf0a
commit fee029b86e
11 changed files with 212 additions and 100 deletions
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104
src/ArduinoJson/Numbers/FloatTraits.hpp
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@@ -10,6 +10,8 @@
#include <ArduinoJson/Configuration.hpp>
#include <ArduinoJson/Polyfills/alias_cast.hpp>
#include <ArduinoJson/Polyfills/math.hpp>
#include <ArduinoJson/Polyfills/preprocessor.hpp>
#include <ArduinoJson/Polyfills/static_array.hpp>
namespace ARDUINOJSON_NAMESPACE {
@@ -46,48 +48,60 @@ struct FloatTraits<T, 8 /*64bits*/> {
}
static T positiveBinaryPowerOfTen(int index) {
static T factors[] = {
1e1,
1e2,
1e4,
1e8,
1e16,
forge(0x4693B8B5, 0xB5056E17), // 1e32
forge(0x4D384F03, 0xE93FF9F5), // 1e64
forge(0x5A827748, 0xF9301D32), // 1e128
forge(0x75154FDD, 0x7F73BF3C) // 1e256
};
return factors[index];
ARDUINOJSON_DEFINE_STATIC_ARRAY( //
uint32_t, factors,
ARDUINOJSON_EXPAND18({
0x40240000, 0x00000000, // 1e1
0x40590000, 0x00000000, // 1e2
0x40C38800, 0x00000000, // 1e4
0x4197D784, 0x00000000, // 1e8
0x4341C379, 0x37E08000, // 1e16
0x4693B8B5, 0xB5056E17, // 1e32
0x4D384F03, 0xE93FF9F5, // 1e64
0x5A827748, 0xF9301D32, // 1e128
0x75154FDD, 0x7F73BF3C // 1e256
}));
return forge(
ARDUINOJSON_READ_STATIC_ARRAY(uint32_t, factors, 2 * index),
ARDUINOJSON_READ_STATIC_ARRAY(uint32_t, factors, 2 * index + 1));
}
static T negativeBinaryPowerOfTen(int index) {
static T factors[] = {
forge(0x3FB99999, 0x9999999A), // 1e-1
forge(0x3F847AE1, 0x47AE147B), // 1e-2
forge(0x3F1A36E2, 0xEB1C432D), // 1e-4
forge(0x3E45798E, 0xE2308C3A), // 1e-8
forge(0x3C9CD2B2, 0x97D889BC), // 1e-16
forge(0x3949F623, 0xD5A8A733), // 1e-32
forge(0x32A50FFD, 0x44F4A73D), // 1e-64
forge(0x255BBA08, 0xCF8C979D), // 1e-128
forge(0x0AC80628, 0x64AC6F43) // 1e-256
};
return factors[index];
ARDUINOJSON_DEFINE_STATIC_ARRAY( //
uint32_t, factors,
ARDUINOJSON_EXPAND18({
0x3FB99999, 0x9999999A, // 1e-1
0x3F847AE1, 0x47AE147B, // 1e-2
0x3F1A36E2, 0xEB1C432D, // 1e-4
0x3E45798E, 0xE2308C3A, // 1e-8
0x3C9CD2B2, 0x97D889BC, // 1e-16
0x3949F623, 0xD5A8A733, // 1e-32
0x32A50FFD, 0x44F4A73D, // 1e-64
0x255BBA08, 0xCF8C979D, // 1e-128
0x0AC80628, 0x64AC6F43 // 1e-256
}));
return forge(
ARDUINOJSON_READ_STATIC_ARRAY(uint32_t, factors, 2 * index),
ARDUINOJSON_READ_STATIC_ARRAY(uint32_t, factors, 2 * index + 1));
}
static T negativeBinaryPowerOfTenPlusOne(int index) {
static T factors[] = {
1e0,
forge(0x3FB99999, 0x9999999A), // 1e-1
forge(0x3F50624D, 0xD2F1A9FC), // 1e-3
forge(0x3E7AD7F2, 0x9ABCAF48), // 1e-7
forge(0x3CD203AF, 0x9EE75616), // 1e-15
forge(0x398039D6, 0x65896880), // 1e-31
forge(0x32DA53FC, 0x9631D10D), // 1e-63
forge(0x25915445, 0x81B7DEC2), // 1e-127
forge(0x0AFE07B2, 0x7DD78B14) // 1e-255
};
return factors[index];
ARDUINOJSON_DEFINE_STATIC_ARRAY( //
uint32_t, factors,
ARDUINOJSON_EXPAND18({
0x3FF00000, 0x00000000, // 1e0
0x3FB99999, 0x9999999A, // 1e-1
0x3F50624D, 0xD2F1A9FC, // 1e-3
0x3E7AD7F2, 0x9ABCAF48, // 1e-7
0x3CD203AF, 0x9EE75616, // 1e-15
0x398039D6, 0x65896880, // 1e-31
0x32DA53FC, 0x9631D10D, // 1e-63
0x25915445, 0x81B7DEC2, // 1e-127
0x0AFE07B2, 0x7DD78B14 // 1e-255
}));
return forge(
ARDUINOJSON_READ_STATIC_ARRAY(uint32_t, factors, 2 * index),
ARDUINOJSON_READ_STATIC_ARRAY(uint32_t, factors, 2 * index + 1));
}
static T nan() {
@@ -144,18 +158,24 @@ struct FloatTraits<T, 4 /*32bits*/> {
}
static T positiveBinaryPowerOfTen(int index) {
static T factors[] = {1e1f, 1e2f, 1e4f, 1e8f, 1e16f, 1e32f};
return factors[index];
ARDUINOJSON_DEFINE_STATIC_ARRAY(
T, factors,
ARDUINOJSON_EXPAND6({1e1f, 1e2f, 1e4f, 1e8f, 1e16f, 1e32f}));
return ARDUINOJSON_READ_STATIC_ARRAY(T, factors, index);
}
static T negativeBinaryPowerOfTen(int index) {
static T factors[] = {1e-1f, 1e-2f, 1e-4f, 1e-8f, 1e-16f, 1e-32f};
return factors[index];
ARDUINOJSON_DEFINE_STATIC_ARRAY(
T, factors,
ARDUINOJSON_EXPAND6({1e-1f, 1e-2f, 1e-4f, 1e-8f, 1e-16f, 1e-32f}));
return ARDUINOJSON_READ_STATIC_ARRAY(T, factors, index);
}
static T negativeBinaryPowerOfTenPlusOne(int index) {
static T factors[] = {1e0f, 1e-1f, 1e-3f, 1e-7f, 1e-15f, 1e-31f};
return factors[index];
ARDUINOJSON_DEFINE_STATIC_ARRAY(
T, factors,
ARDUINOJSON_EXPAND6({1e0f, 1e-1f, 1e-3f, 1e-7f, 1e-15f, 1e-31f}));
return ARDUINOJSON_READ_STATIC_ARRAY(T, factors, index);
}
static T forge(uint32_t bits) {