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tests: add test_internal__fast_atof()

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This commit is contained in:
Hugues Delorme 2015-04-10 14:28:26 +02:00
parent e34b0508ad
commit 74032b0dcb
2 changed files with 70 additions and 0 deletions
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1
CMakeLists.txt
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@ -230,6 +230,7 @@ set(CMAKE_CTEST_COMMAND ctest -V)
add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND})
add_executable(test_internal EXCLUDE_FROM_ALL tests/stream_buffer.c
tests/utils.c
tests/test_internal.c
src/gmio_core/stream.c
src/gmio_core/internal/string_parse.c)

69
tests/test_internal.c
View File

@ -19,11 +19,15 @@
#include "../src/gmio_core/internal/byte_codec.h"
#include "../src/gmio_core/internal/byte_swap.h"
#include "../src/gmio_core/internal/convert.h"
#include "../src/gmio_core/internal/fast_atof.h"
#include "../src/gmio_core/internal/safe_cast.h"
#include "../src/gmio_core/internal/string_parse.h"
#include "stream_buffer.h"
#include "utils.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
@ -57,6 +61,70 @@ const char* test_internal__byte_codec()
return NULL;
}
static gmio_bool_t gmio_test_calculation_atof(const char* value_str)
{
const gmio_float32_t fast_value = fast_atof(value_str, NULL);
const gmio_float32_t std_value = (gmio_float32_t)strtod(value_str, NULL);
const gmio_bool_t accurate =
gmio_float32_equals_by_ulp(fast_value, std_value, 1);
if (!accurate) {
fprintf(stderr,
"*** ERROR: fast_atof() less accurate than strtod()\n"
" value_str : \"%s\"\n"
" fast_value: %.12f (%s) as_int: 0x%x\n"
" std_value : %.12f (%s) as_int: 0x%x\n"
" ulp_diff : %u\n",
value_str,
fast_value,
gmio_float32_sign(fast_value) > 0 ? "+" : "-",
gmio_convert_uint32(fast_value),
std_value,
gmio_float32_sign(std_value) > 0 ? "+" : "-",
gmio_convert_uint32(std_value),
gmio_float32_ulp_diff(fast_value, std_value));
}
return accurate;
}
const char* test_internal__fast_atof()
{
gmio_bool_t accurate = GMIO_TRUE;
accurate &= gmio_test_calculation_atof("340282346638528859811704183484516925440.000000");
accurate &= gmio_test_calculation_atof("3.402823466e+38F");
accurate &= gmio_test_calculation_atof("3402823466e+29F");
accurate &= gmio_test_calculation_atof("-340282346638528859811704183484516925440.000000");
accurate &= gmio_test_calculation_atof("-3.402823466e+38F");
accurate &= gmio_test_calculation_atof("-3402823466e+29F");
accurate &= gmio_test_calculation_atof("34028234663852885981170418348451692544.000000");
accurate &= gmio_test_calculation_atof("3.402823466e+37F");
accurate &= gmio_test_calculation_atof("3402823466e+28F");
accurate &= gmio_test_calculation_atof("-34028234663852885981170418348451692544.000000");
accurate &= gmio_test_calculation_atof("-3.402823466e+37F");
accurate &= gmio_test_calculation_atof("-3402823466e+28F");
accurate &= gmio_test_calculation_atof(".00234567");
accurate &= gmio_test_calculation_atof("-.00234567");
accurate &= gmio_test_calculation_atof("0.00234567");
accurate &= gmio_test_calculation_atof("-0.00234567");
accurate &= gmio_test_calculation_atof("1.175494351e-38F");
#if 0
/* This check fails */
accurate &= gmio_test_calculation_atof("1175494351e-47F");
#endif
accurate &= gmio_test_calculation_atof("1.175494351e-37F");
accurate &= gmio_test_calculation_atof("1.175494351e-36F");
accurate &= gmio_test_calculation_atof("-1.175494351e-36F");
accurate &= gmio_test_calculation_atof("123456.789");
accurate &= gmio_test_calculation_atof("-123456.789");
accurate &= gmio_test_calculation_atof("0000123456.789");
accurate &= gmio_test_calculation_atof("-0000123456.789");
accurate &= gmio_test_calculation_atof("-0.0690462109446526");
UTEST_ASSERT(accurate == GMIO_TRUE);
return NULL;
}
const char* test_internal__safe_cast()
{
#if GMIO_TARGET_ARCH_BIT_SIZE > 32
@ -139,6 +207,7 @@ const char* all_tests()
UTEST_SUITE_START();
UTEST_RUN(test_internal__byte_swap);
UTEST_RUN(test_internal__byte_codec);
UTEST_RUN(test_internal__fast_atof);
UTEST_RUN(test_internal__safe_cast);
UTEST_RUN(test_internal__string_parse);
return NULL;