coffee/etl
1
0
Fork 0
mirror of https://github.com/ETLCPP/etl.git synced 2026-10-28 18:07:10 +08:00
Code Issues Packages Projects Releases Wiki Activity
etl/test/test_math.cpp
John Wellbelove 88c1b34411
Feature/to string float uses double math (#1610) 
* Added overloaded etl::floor() and etl::ceil()

Added tests for float, double, long double

* Documented functions from math.h

* Added more math wrappers.

Move wrappers to clib namespace

* Cleanup of duplicated code.

* clang-format

* Code review updates

---------

Co-authored-by: John Wellbelove <john.wellbelove@etlcpp.com>
2026-10-12 09:36:21 +01:00

250 lines
8.3 KiB
C++
Raw Blame History

/******************************************************************************
The MIT License(MIT)
Embedded Template Library.
https://github.com/ETLCPP/etl
https://www.etlcpp.com
Copyright(c) 2023 John Wellbelove
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files(the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions :
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
******************************************************************************/
#include "unit_test_framework.h"
#include "etl/math.h"
#include <stdint.h>
#include <type_traits>
namespace
{
SUITE(test_math)
{
//*************************************************************************
TEST(test_is_nan)
{
float f1 = NAN;
float f2 = 0;
double d1 = NAN;
double d2 = 0;
long double ld1 = NAN;
long double ld2 = 0;
int i = 0;
CHECK_TRUE(etl::is_nan(f1));
CHECK_FALSE(etl::is_nan(f2));
CHECK_TRUE(etl::is_nan(d1));
CHECK_FALSE(etl::is_nan(d2));
CHECK_TRUE(etl::is_nan(ld1));
CHECK_FALSE(etl::is_nan(ld2));
CHECK_FALSE(etl::is_nan(i));
}
//*************************************************************************
TEST(test_is_infinity)
{
float f1a = INFINITY;
float f1b = -INFINITY;
float f2 = 0;
double d1a = INFINITY;
double d1b = -INFINITY;
double d2 = 0;
long double ld1a = INFINITY;
long double ld1b = -INFINITY;
long double ld2 = 0;
int ia = INT_MAX;
int ib = 0;
int ic = INT_MIN;
CHECK_TRUE(etl::is_infinity(f1a));
CHECK_TRUE(etl::is_infinity(f1b));
CHECK_FALSE(etl::is_infinity(f2));
CHECK_TRUE(etl::is_infinity(d1a));
CHECK_TRUE(etl::is_infinity(d1b));
CHECK_FALSE(etl::is_infinity(d2));
CHECK_TRUE(etl::is_infinity(ld1a));
CHECK_TRUE(etl::is_infinity(ld1b));
CHECK_FALSE(etl::is_infinity(ld2));
CHECK_FALSE(etl::is_infinity(ia));
CHECK_FALSE(etl::is_infinity(ib));
CHECK_FALSE(etl::is_infinity(ic));
}
//*************************************************************************
TEST(test_is_zero)
{
float f1 = 0;
float f2 = 1.0f;
double d1 = 0;
double d2 = 1.0;
long double ld1 = 0;
long double ld2 = 1.0L;
int i1 = 0;
int i2 = 1;
CHECK_TRUE(etl::is_zero(f1));
CHECK_FALSE(etl::is_zero(f2));
CHECK_TRUE(etl::is_zero(d1));
CHECK_FALSE(etl::is_zero(d2));
CHECK_TRUE(etl::is_zero(ld1));
CHECK_FALSE(etl::is_zero(ld2));
CHECK_TRUE(etl::is_zero(i1));
CHECK_FALSE(etl::is_zero(i2));
}
//*************************************************************************
TEST(test_is_exactly_equal)
{
float f1 = 0;
float f2 = 1.0f;
double d1 = 0;
double d2 = 1.0;
long double ld1 = 0;
long double ld2 = 1.0L;
int i1 = 0;
int i2 = 1;
CHECK_TRUE(etl::is_exactly_equal(f1, f1));
CHECK_FALSE(etl::is_exactly_equal(f1, f2));
CHECK_TRUE(etl::is_exactly_equal(d1, d1));
CHECK_FALSE(etl::is_exactly_equal(d1, d2));
CHECK_TRUE(etl::is_exactly_equal(ld1, ld1));
CHECK_FALSE(etl::is_exactly_equal(ld1, ld2));
CHECK_TRUE(etl::is_exactly_equal(i1, i1));
CHECK_FALSE(etl::is_exactly_equal(i1, i2));
}
//*************************************************************************
TEST(test_floor)
{
float f1 = 1.7f;
float f2 = -1.7f;
double d1 = 1.7;
double d2 = -1.7;
long double ld1 = 1.7L;
long double ld2 = -1.7L;
CHECK_CLOSE(1.0f, etl::math::floor(f1), 0.0001f);
CHECK_CLOSE(-2.0f, etl::math::floor(f2), 0.0001f);
CHECK_CLOSE(1.0, etl::math::floor(d1), 0.0001);
CHECK_CLOSE(-2.0, etl::math::floor(d2), 0.0001);
CHECK_CLOSE(1.0L, etl::math::floor(ld1), 0.0001L);
CHECK_CLOSE(-2.0L, etl::math::floor(ld2), 0.0001L);
}
//*************************************************************************
TEST(test_ceil)
{
float f1 = 1.2f;
float f2 = -1.2f;
double d1 = 1.2;
double d2 = -1.2;
long double ld1 = 1.2L;
long double ld2 = -1.2L;
CHECK_CLOSE(2.0f, etl::math::ceil(f1), 0.0001f);
CHECK_CLOSE(-1.0f, etl::math::ceil(f2), 0.0001f);
CHECK_CLOSE(2.0, etl::math::ceil(d1), 0.0001);
CHECK_CLOSE(-1.0, etl::math::ceil(d2), 0.0001);
CHECK_CLOSE(2.0L, etl::math::ceil(ld1), 0.0001L);
CHECK_CLOSE(-1.0L, etl::math::ceil(ld2), 0.0001L);
}
//*************************************************************************
TEST(test_log10)
{
float f1 = 100.0f;
double d1 = 1000.0;
long double ld1 = 10000.0L;
CHECK_CLOSE(2.0f, etl::math::log10(f1), 0.0001f);
CHECK_CLOSE(3.0, etl::math::log10(d1), 0.0001);
CHECK_CLOSE(4.0L, etl::math::log10(ld1), 0.0001L);
}
//*************************************************************************
TEST(test_round)
{
float f1 = 1.5f;
float f2 = -1.5f;
float f3 = 1.4f;
float f4 = -1.4f;
double d1 = 2.5;
double d2 = -2.5;
double d3 = 2.4;
double d4 = -2.4;
long double ld1 = 3.5L;
long double ld2 = -3.5L;
long double ld3 = 3.4L;
long double ld4 = -3.4L;
CHECK_CLOSE(2.0f, etl::math::round(f1), 0.0001f);
CHECK_CLOSE(-2.0f, etl::math::round(f2), 0.0001f);
CHECK_CLOSE(1.0f, etl::math::round(f3), 0.0001f);
CHECK_CLOSE(-1.0f, etl::math::round(f4), 0.0001f);
CHECK_CLOSE(3.0, etl::math::round(d1), 0.0001);
CHECK_CLOSE(-3.0, etl::math::round(d2), 0.0001);
CHECK_CLOSE(2.0, etl::math::round(d3), 0.0001);
CHECK_CLOSE(-2.0, etl::math::round(d4), 0.0001);
CHECK_CLOSE(4.0L, etl::math::round(ld1), 0.0001L);
CHECK_CLOSE(-4.0L, etl::math::round(ld2), 0.0001L);
CHECK_CLOSE(3.0L, etl::math::round(ld3), 0.0001L);
CHECK_CLOSE(-3.0L, etl::math::round(ld4), 0.0001L);
}
//*************************************************************************
TEST(test_pow)
{
float fb = 2.0f;
float fe = 3.0f;
double db = 2.0;
double de = 10.0;
long double ldb = 2.0L;
long double lde = 4.0L;
CHECK_CLOSE(8.0f, etl::math::pow(fb, fe), 0.0001f);
CHECK_CLOSE(1024.0, etl::math::pow(db, de), 0.0001);
CHECK_CLOSE(16.0L, etl::math::pow(ldb, lde), 0.0001L);
}
//*************************************************************************
TEST(test_modf)
{
float f1 = 3.75f;
float f_intpart = 0.0f;
double d1 = 3.75;
double d_intpart = 0.0;
long double ld1 = 3.75L;
long double ld_intpart = 0.0L;
float f_frac = etl::math::modf(f1, &f_intpart);
double d_frac = etl::math::modf(d1, &d_intpart);
long double ld_frac = etl::math::modf(ld1, &ld_intpart);
CHECK_CLOSE(3.0f, f_intpart, 0.0001f);
CHECK_CLOSE(0.75f, f_frac, 0.0001f);
CHECK_CLOSE(3.0, d_intpart, 0.0001);
CHECK_CLOSE(0.75, d_frac, 0.0001);
CHECK_CLOSE((double)3.0L, (double)ld_intpart, 0.0001);
CHECK_CLOSE((double)0.75L, (double)ld_frac, 0.0001);
}
}
} // namespace
Reference in New Issue View Git Blame Copy Permalink