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Diffstat (limited to 'silx/math/include/math_compatibility.h')
-rw-r--r-- | silx/math/include/math_compatibility.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/silx/math/include/math_compatibility.h b/silx/math/include/math_compatibility.h new file mode 100644 index 0000000..3d69c0c --- /dev/null +++ b/silx/math/include/math_compatibility.h @@ -0,0 +1,53 @@ +# /*########################################################################## +# +# Copyright (c) 2017-2018 European Synchrotron Radiation Facility +# +# 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. +# +# ###########################################################################*/ +/* This header provides libc math functions and macros across platforms. + + Needed as VisualStudio 2008 (i.e., Python2.7) is missing some functions/macros. +*/ + +#ifndef __MATH_COMPATIBILITY_H__ +#define __MATH_COMPATIBILITY_H__ + +#include <math.h> + +#ifndef INFINITY +#define INFINITY (DBL_MAX+DBL_MAX) +#endif + +#ifndef NAN +#define NAN (INFINITY-INFINITY) +#endif + +#if (defined (_MSC_VER) && _MSC_VER < 1800) +#include <float.h> + +/* Make sure asinh returns -inf rather than NaN for v=-inf */ +#define asinh(v) (v == -INFINITY ? v : log((v) + sqrt((v)*(v) + 1))) + +#define isnan(v) _isnan(v) +#define isfinite(v) _finite(v) +#define lrint(v) ((long int) (v)) +#endif + +#endif /*__MATH_COMPATIBILITY_H__*/ |