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/*
* Copyright (c) 2014 Ryan Juckett
*
* 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 file contains a modified version of Ryan Juckett's Dragon4
* implementation, obtained from http://www.ryanjuckett.com,
* which has been ported from C++ to C and which has
* modifications specific to printing floats in numpy.
*
* Ryan Juckett's original code was under the Zlib license; he gave numpy
* permission to include it under the MIT license instead.
*/
#ifndef _NPY_DRAGON4_H_
#define _NPY_DRAGON4_H_
#include "Python.h"
#include "structmember.h"
#define NPY_NO_DEPRECATED_API NPY_API_VERSION
#define _MULTIARRAYMODULE
#include "numpy/arrayobject.h"
#include "npy_config.h"
#include "npy_pycompat.h"
#include "numpy/arrayscalars.h"
/* Half binary format */
#define NPY_HALF_BINFMT_NAME IEEE_binary16
/* Float binary format */
#if NPY_BITSOF_FLOAT == 32
#define NPY_FLOAT_BINFMT_NAME IEEE_binary32
#elif NPY_BITSOF_FLOAT == 64
#define NPY_FLOAT_BINFMT_NAME IEEE_binary64
#else
#error No float representation defined
#endif
/* Double binary format */
#if NPY_BITSOF_DOUBLE == 32
#define NPY_DOUBLE_BINFMT_NAME IEEE_binary32
#elif NPY_BITSOF_DOUBLE == 64
#define NPY_DOUBLE_BINFMT_NAME IEEE_binary64
#else
#error No double representation defined
#endif
/* LongDouble binary format */
#if defined(HAVE_LDOUBLE_IEEE_QUAD_BE)
#define NPY_LONGDOUBLE_BINFMT_NAME IEEE_binary128_be
#elif defined(HAVE_LDOUBLE_IEEE_QUAD_LE)
#define NPY_LONGDOUBLE_BINFMT_NAME IEEE_binary128_le
#elif (defined(HAVE_LDOUBLE_IEEE_DOUBLE_LE) || \
defined(HAVE_LDOUBLE_IEEE_DOUBLE_BE))
#define NPY_LONGDOUBLE_BINFMT_NAME IEEE_binary64
#elif defined(HAVE_LDOUBLE_INTEL_EXTENDED_12_BYTES_LE)
#define NPY_LONGDOUBLE_BINFMT_NAME Intel_extended96
#elif defined(HAVE_LDOUBLE_INTEL_EXTENDED_16_BYTES_LE)
#define NPY_LONGDOUBLE_BINFMT_NAME Intel_extended128
#elif defined(HAVE_LDOUBLE_MOTOROLA_EXTENDED_12_BYTES_BE)
#define NPY_LONGDOUBLE_BINFMT_NAME Motorola_extended96
#elif (defined(HAVE_LDOUBLE_IBM_DOUBLE_DOUBLE_LE) || \
defined(HAVE_LDOUBLE_IBM_DOUBLE_DOUBLE_BE))
#define NPY_LONGDOUBLE_BINFMT_NAME IBM_double_double
#else
#error No long double representation defined
#endif
typedef enum DigitMode
{
/* Round digits to print shortest uniquely identifiable number. */
DigitMode_Unique,
/* Output the digits of the number as if with infinite precision */
DigitMode_Exact,
} DigitMode;
typedef enum CutoffMode
{
/* up to cutoffNumber significant digits */
CutoffMode_TotalLength,
/* up to cutoffNumber significant digits past the decimal point */
CutoffMode_FractionLength,
} CutoffMode;
typedef enum TrimMode
{
TrimMode_None, /* don't trim zeros, always leave a decimal point */
TrimMode_LeaveOneZero, /* trim all but the zero before the decimal point */
TrimMode_Zeros, /* trim all trailing zeros, leave decimal point */
TrimMode_DptZeros, /* trim trailing zeros & trailing decimal point */
} TrimMode;
#define make_dragon4_typedecl(Type, npy_type) \
PyObject *\
Dragon4_Positional_##Type(npy_type *val, DigitMode digit_mode,\
CutoffMode cutoff_mode, int precision,\
int sign, TrimMode trim, int pad_left,\
int pad_right);\
PyObject *\
Dragon4_Scientific_##Type(npy_type *val, DigitMode digit_mode,\
int precision, int sign, TrimMode trim,\
int pad_left, int exp_digits);
make_dragon4_typedecl(Half, npy_half)
make_dragon4_typedecl(Float, npy_float)
make_dragon4_typedecl(Double, npy_double)
make_dragon4_typedecl(LongDouble, npy_longdouble)
#undef make_dragon4_typedecl
PyObject *
Dragon4_Positional(PyObject *obj, DigitMode digit_mode, CutoffMode cutoff_mode,
int precision, int sign, TrimMode trim, int pad_left,
int pad_right);
PyObject *
Dragon4_Scientific(PyObject *obj, DigitMode digit_mode, int precision,
int sign, TrimMode trim, int pad_left, int exp_digits);
#endif
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