48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/****************************************************************************
|
|
** gmio
|
|
** Copyright Fougue (2 Mar. 2015)
|
|
** contact@fougue.pro
|
|
**
|
|
** This software is a reusable library whose purpose is to provide complete
|
|
** I/O support for various CAD file formats (eg. STL)
|
|
**
|
|
** This software is governed by the CeCILL-B license under French law and
|
|
** abiding by the rules of distribution of free software. You can use,
|
|
** modify and/ or redistribute the software under the terms of the CeCILL-B
|
|
** license as circulated by CEA, CNRS and INRIA at the following URL
|
|
** "http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html".
|
|
****************************************************************************/
|
|
|
|
#ifndef GMIO_TESTS_UTILS_H
|
|
#define GMIO_TESTS_UTILS_H
|
|
|
|
#include "../src/gmio_core/global.h"
|
|
#include "../src/gmio_core/internal/convert.h"
|
|
|
|
/*! Does \p a and \p b compares equals by ULP (Units in the Last Place) ?
|
|
*
|
|
* ULP = spacing between floating-point numbers
|
|
*
|
|
* See:
|
|
* http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm
|
|
*/
|
|
gmio_bool_t gmio_float32_equals_by_ulp(
|
|
gmio_float32_t a, gmio_float32_t b, uint32_t max_ulp_diff);
|
|
|
|
/*! Count of ULP between \p a and \p b */
|
|
uint32_t gmio_float32_ulp_diff(gmio_float32_t a, gmio_float32_t b);
|
|
|
|
/*! Portable sign-extraction for int32 */
|
|
GMIO_INLINE int gmio_int32_sign(int32_t v)
|
|
{
|
|
return (v & 0x80000000) != 0 ? -1 : 1;
|
|
}
|
|
|
|
/*! Portable sign-extraction for float32 */
|
|
GMIO_INLINE int gmio_float32_sign(gmio_float32_t v)
|
|
{
|
|
return gmio_int32_sign(gmio_convert_int32(v));
|
|
}
|
|
|
|
#endif /* GMIO_TESTS_UTILS_H */
|