From 39895a677e5d370824e702cfe90ebc67737b8482 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <daniel.friesel@uos.de>
Date: Wed, 12 May 2021 09:12:09 +0200
Subject: import ArduinoJson 6.18.0

---
 include/lib/ArduinoJson/Numbers/FloatParts.hpp | 87 ++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 include/lib/ArduinoJson/Numbers/FloatParts.hpp

(limited to 'include/lib/ArduinoJson/Numbers/FloatParts.hpp')

diff --git a/include/lib/ArduinoJson/Numbers/FloatParts.hpp b/include/lib/ArduinoJson/Numbers/FloatParts.hpp
new file mode 100644
index 0000000..4e53add
--- /dev/null
+++ b/include/lib/ArduinoJson/Numbers/FloatParts.hpp
@@ -0,0 +1,87 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright Benoit Blanchon 2014-2021
+// MIT License
+
+#pragma once
+
+#include <ArduinoJson/Configuration.hpp>
+#include <ArduinoJson/Numbers/FloatTraits.hpp>
+#include <ArduinoJson/Polyfills/math.hpp>
+
+namespace ARDUINOJSON_NAMESPACE {
+
+template <typename TFloat>
+struct FloatParts {
+  uint32_t integral;
+  uint32_t decimal;
+  int16_t exponent;
+  int8_t decimalPlaces;
+
+  FloatParts(TFloat value) {
+    uint32_t maxDecimalPart = sizeof(TFloat) >= 8 ? 1000000000 : 1000000;
+    decimalPlaces = sizeof(TFloat) >= 8 ? 9 : 6;
+
+    exponent = normalize(value);
+
+    integral = uint32_t(value);
+    // reduce number of decimal places by the number of integral places
+    for (uint32_t tmp = integral; tmp >= 10; tmp /= 10) {
+      maxDecimalPart /= 10;
+      decimalPlaces--;
+    }
+
+    TFloat remainder = (value - TFloat(integral)) * TFloat(maxDecimalPart);
+
+    decimal = uint32_t(remainder);
+    remainder = remainder - TFloat(decimal);
+
+    // rounding:
+    // increment by 1 if remainder >= 0.5
+    decimal += uint32_t(remainder * 2);
+    if (decimal >= maxDecimalPart) {
+      decimal = 0;
+      integral++;
+      if (exponent && integral >= 10) {
+        exponent++;
+        integral = 1;
+      }
+    }
+
+    // remove trailing zeros
+    while (decimal % 10 == 0 && decimalPlaces > 0) {
+      decimal /= 10;
+      decimalPlaces--;
+    }
+  }
+
+  static int16_t normalize(TFloat& value) {
+    typedef FloatTraits<TFloat> traits;
+    int16_t powersOf10 = 0;
+
+    int8_t index = sizeof(TFloat) == 8 ? 8 : 5;
+    int bit = 1 << index;
+
+    if (value >= ARDUINOJSON_POSITIVE_EXPONENTIATION_THRESHOLD) {
+      for (; index >= 0; index--) {
+        if (value >= traits::positiveBinaryPowerOfTen(index)) {
+          value *= traits::negativeBinaryPowerOfTen(index);
+          powersOf10 = int16_t(powersOf10 + bit);
+        }
+        bit >>= 1;
+      }
+    }
+
+    if (value > 0 && value <= ARDUINOJSON_NEGATIVE_EXPONENTIATION_THRESHOLD) {
+      for (; index >= 0; index--) {
+        if (value < traits::negativeBinaryPowerOfTenPlusOne(index)) {
+          value *= traits::positiveBinaryPowerOfTen(index);
+          powersOf10 = int16_t(powersOf10 - bit);
+        }
+        bit >>= 1;
+      }
+    }
+
+    return powersOf10;
+  }
+};
+}  // namespace ARDUINOJSON_NAMESPACE
-- 
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