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43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
// ArduinoJson - https://arduinojson.org
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// Copyright © 2014-2025, Benoit BLANCHON
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// MIT License
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#include <ArduinoJson/Numbers/FloatParts.hpp>
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#include <catch.hpp>
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using namespace ArduinoJson::detail;
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TEST_CASE("decomposeFloat()") {
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SECTION("1.7976931348623157E+308") {
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auto parts = decomposeFloat(1.7976931348623157E+308, 9);
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REQUIRE(parts.integral == 1);
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REQUIRE(parts.decimal == 797693135);
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REQUIRE(parts.decimalPlaces == 9);
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REQUIRE(parts.exponent == 308);
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}
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SECTION("4.94065645841247e-324") {
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auto parts = decomposeFloat(4.94065645841247e-324, 9);
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REQUIRE(parts.integral == 4);
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REQUIRE(parts.decimal == 940656458);
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REQUIRE(parts.decimalPlaces == 9);
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REQUIRE(parts.exponent == -324);
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}
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SECTION("3.4E+38") {
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auto parts = decomposeFloat(3.4E+38f, 6);
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REQUIRE(parts.integral == 3);
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REQUIRE(parts.decimal == 4);
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REQUIRE(parts.decimalPlaces == 1);
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REQUIRE(parts.exponent == 38);
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}
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SECTION("1.17549435e−38") {
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auto parts = decomposeFloat(1.17549435e-38f, 6);
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REQUIRE(parts.integral == 1);
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REQUIRE(parts.decimal == 175494);
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REQUIRE(parts.decimalPlaces == 6);
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REQUIRE(parts.exponent == -38);
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}
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}
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