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Always add decimal when printing float

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This commit is contained in:
kobewi
2024-03-26 17:04:14 +01:00
parent 533c616cb8
commit 5c0f2414cd
31 changed files with 241 additions and 141 deletions
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24
tests/core/string/test_string.h
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@@ -455,9 +455,9 @@ TEST_CASE("[String] Erasing") {
}
TEST_CASE("[String] Number to string") {
CHECK(String::num(0) == "0");
CHECK(String::num(0.0) == "0"); // No trailing zeros.
CHECK(String::num(-0.0) == "-0"); // Includes sign even for zero.
CHECK(String::num(0) == "0.0"); // The method takes double, so always add zeros.
CHECK(String::num(0.0) == "0.0");
CHECK(String::num(-0.0) == "-0.0"); // Includes sign even for zero.
CHECK(String::num(3.141593) == "3.141593");
CHECK(String::num(3.141593, 3) == "3.142");
CHECK(String::num_scientific(30000000) == "3e+07");
@@ -476,15 +476,15 @@ TEST_CASE("[String] Number to string") {
CHECK(String::num_real(3.141593) == "3.141593");
CHECK(String::num_real(3.141) == "3.141"); // No trailing zeros.
#ifdef REAL_T_IS_DOUBLE
CHECK_MESSAGE(String::num_real(123.456789) == "123.456789", "Prints the appropriate amount of digits for real_t = double.");
CHECK_MESSAGE(String::num_real(-123.456789) == "-123.456789", "Prints the appropriate amount of digits for real_t = double.");
CHECK_MESSAGE(String::num_real(Math_PI) == "3.14159265358979", "Prints the appropriate amount of digits for real_t = double.");
CHECK_MESSAGE(String::num_real(3.1415f) == "3.1414999961853", "Prints more digits of 32-bit float when real_t = double (ones that would be reliable for double) and no trailing zero.");
CHECK_MESSAGE(String::num_real(real_t(123.456789)) == "123.456789", "Prints the appropriate amount of digits for real_t = double.");
CHECK_MESSAGE(String::num_real(real_t(-123.456789)) == "-123.456789", "Prints the appropriate amount of digits for real_t = double.");
CHECK_MESSAGE(String::num_real(real_t(Math_PI)) == "3.14159265358979", "Prints the appropriate amount of digits for real_t = double.");
CHECK_MESSAGE(String::num_real(real_t(3.1415f)) == "3.1414999961853", "Prints more digits of 32-bit float when real_t = double (ones that would be reliable for double) and no trailing zero.");
#else
CHECK_MESSAGE(String::num_real(123.456789) == "123.4568", "Prints the appropriate amount of digits for real_t = float.");
CHECK_MESSAGE(String::num_real(-123.456789) == "-123.4568", "Prints the appropriate amount of digits for real_t = float.");
CHECK_MESSAGE(String::num_real(Math_PI) == "3.141593", "Prints the appropriate amount of digits for real_t = float.");
CHECK_MESSAGE(String::num_real(3.1415f) == "3.1415", "Prints only reliable digits of 32-bit float when real_t = float.");
CHECK_MESSAGE(String::num_real(real_t(123.456789)) == "123.4568", "Prints the appropriate amount of digits for real_t = float.");
CHECK_MESSAGE(String::num_real(real_t(-123.456789)) == "-123.4568", "Prints the appropriate amount of digits for real_t = float.");
CHECK_MESSAGE(String::num_real(real_t(Math_PI)) == "3.141593", "Prints the appropriate amount of digits for real_t = float.");
CHECK_MESSAGE(String::num_real(real_t(3.1415f)) == "3.1415", "Prints only reliable digits of 32-bit float when real_t = float.");
#endif // REAL_T_IS_DOUBLE
// Checks doubles with many decimal places.
@@ -493,7 +493,7 @@ TEST_CASE("[String] Number to string") {
CHECK(String::num(-0.0000012345432123454321) == "-0.00000123454321");
CHECK(String::num(-10000.0000012345432123454321) == "-10000.0000012345");
CHECK(String::num(0.0000000000012345432123454321) == "0.00000000000123");
CHECK(String::num(0.0000000000012345432123454321, 3) == "0");
CHECK(String::num(0.0000000000012345432123454321, 3) == "0.0");
// Note: When relevant (remainder > 0.5), the last digit gets rounded up,
// which can also lead to not include a trailing zero, e.g. "...89" -> "...9".