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/*
* This file contains test for both fptoa and fptoms (which uses dofptoa),
* since all these functions are very similar.
*/
#include "config.h"
#include "ntp_fp.h"
#include "ntp_stdlib.h"
#include "unity.h"
#define SFP_MAX_PRECISION 6
void setUp(void);
void test_PositiveInteger(void);
void test_NegativeInteger(void);
void test_PositiveIntegerPositiveFraction(void);
void test_NegativeIntegerNegativeFraction(void);
void test_PositiveIntegerNegativeFraction(void);
void test_NegativeIntegerPositiveFraction(void);
void test_SingleDecimalInteger(void);
void test_SingleDecimalRounding(void);
void
setUp(void)
{
init_lib();
return;
}
void test_PositiveInteger(void)
{
s_fp test = 300 << 16; // exact 300.000000
TEST_ASSERT_EQUAL_STRING("300.000000", fptoa(test, SFP_MAX_PRECISION));
TEST_ASSERT_EQUAL_STRING("300000.000", fptoms(test, SFP_MAX_PRECISION));
}
void test_NegativeInteger(void)
{
s_fp test = -200 << 16; // exact -200.000000
TEST_ASSERT_EQUAL_STRING("-200.000000", fptoa(test, SFP_MAX_PRECISION));
TEST_ASSERT_EQUAL_STRING("-200000.000", fptoms(test, SFP_MAX_PRECISION));
}
void test_PositiveIntegerPositiveFraction(void)
{
s_fp test = (300 << 16) + (1 << 15); // 300 + 0.5
TEST_ASSERT_EQUAL_STRING("300.500000", fptoa(test, SFP_MAX_PRECISION));
TEST_ASSERT_EQUAL_STRING("300500.000", fptoms(test, SFP_MAX_PRECISION));
}
void test_NegativeIntegerNegativeFraction(void)
{
s_fp test = (-200 << 16) - (1 << 15); // -200 - 0.5
TEST_ASSERT_EQUAL_STRING("-200.500000", fptoa(test, SFP_MAX_PRECISION));
TEST_ASSERT_EQUAL_STRING("-200500.000", fptoms(test, SFP_MAX_PRECISION));
}
void test_PositiveIntegerNegativeFraction(void)
{
s_fp test = (300 << 16) - (1 << 14); // 300 - 0.25
TEST_ASSERT_EQUAL_STRING("299.750000", fptoa(test, SFP_MAX_PRECISION));
TEST_ASSERT_EQUAL_STRING("299750.000", fptoms(test, SFP_MAX_PRECISION));
}
void test_NegativeIntegerPositiveFraction(void)
{
s_fp test = (-200 << 16) + (1 << 14)*3; // -200 + 0.75
TEST_ASSERT_EQUAL_STRING("-199.250000", fptoa(test, SFP_MAX_PRECISION));
TEST_ASSERT_EQUAL_STRING("-199250.000", fptoms(test, SFP_MAX_PRECISION));
}
void test_SingleDecimalInteger(void)
{
s_fp test = 300 << 16; // 300
TEST_ASSERT_EQUAL_STRING("300.0", fptoa(test, 1));
TEST_ASSERT_EQUAL_STRING("300000.0", fptoms(test, 1));
}
void test_SingleDecimalRounding(void)
{
s_fp test = (2 << 16) + (1 << 14)*3; // 2 + 0.25*3 = 2.75
TEST_ASSERT_EQUAL_STRING("2.8", fptoa(test, 1));
TEST_ASSERT_EQUAL_STRING("2750.0", fptoms(test, 1));
}
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