diff --git a/.gitignore b/.gitignore index 518a545635..38e7e4a1ff 100644 --- a/.gitignore +++ b/.gitignore @@ -31,6 +31,7 @@ venv/ # spa_c_files builds pvlib/spa_c_files/build* +pvlib/spa_c_files/spa_py.c # spa_c_files source pvlib/spa_c_files/spa.c diff --git a/docs/sphinx/source/whatsnew/v0.6.0.rst b/docs/sphinx/source/whatsnew/v0.6.0.rst index 83af55a845..a7e0bab2a2 100644 --- a/docs/sphinx/source/whatsnew/v0.6.0.rst +++ b/docs/sphinx/source/whatsnew/v0.6.0.rst @@ -156,6 +156,7 @@ Bug fixes * Fixed bug in tracking.singleaxis that mistakenly assigned nan values when the Sun was still above the horizon. No effect on systems with axis_tilt=0. (:issue:`569`) +* Patch SPA C-files to fix timezone macro name clash with `pyconfig.h`. (:issue:`168`) Documentation diff --git a/pvlib/solarposition.py b/pvlib/solarposition.py index 9986b1de72..9806d30eb8 100644 --- a/pvlib/solarposition.py +++ b/pvlib/solarposition.py @@ -159,7 +159,13 @@ def spa_c(time, latitude, longitude, pressure=101325, altitude=0, References ---------- - NREL SPA code: http://rredc.nrel.gov/solar/codesandalgorithms/spa/ + NREL SPA reference: http://rredc.nrel.gov/solar/codesandalgorithms/spa/ + NREL SPA C files: https://midcdmz.nrel.gov/spa/ + + Note: The ``timezone`` field in the SPA C files is replaced with + ``time_zone`` to avoid a nameclash with the function ``__timezone`` that is + redefined by Python>=3.5. This issue is + `Python bug 24643 `_. USNO delta T: http://www.usno.navy.mil/USNO/earth-orientation/eo-products/long-term @@ -194,7 +200,7 @@ def spa_c(time, latitude, longitude, pressure=101325, altitude=0, hour=date.hour, minute=date.minute, second=date.second, - timezone=0, # date uses utc time + time_zone=0, # date uses utc time latitude=latitude, longitude=longitude, elevation=altitude, @@ -206,7 +212,9 @@ def spa_c(time, latitude, longitude, pressure=101325, altitude=0, spa_df = pd.DataFrame(spa_out, index=time) if raw_spa_output: - return spa_df + # rename "time_zone" from raw output from spa_c_files.spa_py.spa_calc() + # to "timezone" to match the API of pvlib.solarposition.spa_c() + return spa_df.rename(columns={'time_zone': 'timezone'}) else: dfout = pd.DataFrame({'azimuth': spa_df['azimuth'], 'apparent_zenith': spa_df['zenith'], diff --git a/pvlib/spa_c_files/README.md b/pvlib/spa_c_files/README.md index f9521483cb..472fc4b8f8 100644 --- a/pvlib/spa_c_files/README.md +++ b/pvlib/spa_c_files/README.md @@ -1,34 +1,81 @@ README ------ -NREL provides a C implementation of the solar position algorithm -described in -[Reda, I.; Andreas, A. (2003). Solar Position Algorithm for Solar Radiation Applications. 55 pp.; NREL Report No. TP-560-34302]( -http://www.nrel.gov/docs/fy08osti/34302.pdf). +NREL provides a C implementation of the solar position algorithm described in +[Reda, I.; Andreas, A. (2003). Solar Position Algorithm for Solar Radiation Applications. 55 pp.; NREL Report No. TP-560-34302](http://www.nrel.gov/docs/fy08osti/34302.pdf). -This folder contains the files required to make NREL's C code accessible -to the ``pvlib-python`` package. We use the Cython package to wrap NREL's SPA +This folder contains the files required to make SPA C code accessible +to the `pvlib-python` package. We use the Cython package to wrap the NREL SPA implementation. -** Due to licensing issues, you must download the NREL C files from their -[website](http://www.nrel.gov/midc/spa) ** +** Due to licensing issues, the SPA C files can _not_ be distributed with +`pvlib-python`. You must download the SPA C files from the +[NREL website](https://midcdmz.nrel.gov/spa/). ** -Download the ``spa.c`` and ``spa.h`` files from NREL, -and copy them into the ``pvlib/spa_c_files`` directory. +Download the `spa.c` and `spa.h` files from NREL, and copy them into the +`pvlib/spa_c_files` directory. When the extension is built, the ``timezone`` +field in the SPA C files is replaced with `time_zone` to avoid a nameclash +with the function `__timezone` that is redefined by Python>=3.5. This issue +is [Python bug 24643](https://bugs.python.org/issue24643). There are a total of 5 files needed to compile the C code, described below: -* ``spa.c``: original C code from NREL -* ``spa.h``: header file for spa.c -* ``cspa_py.pxd``: a cython header file which essentially tells cython which parts of the main header file to pay attention to -* ``spa_py.pyx``: the cython code used to define both functions in the python namespace. NOTE: It is possible to provide user access to other paramters of the SPA algorithm through modifying this file -* ``setup.py``: a distutils file which performs the compiling of the cython code +* `spa.c`: original C code from NREL +* `spa.h`: header file for spa.c +* `cspa_py.pxd`: a cython header file which essentially tells cython which + parts of the main header file to pay attention to +* `spa_py.pyx`: the cython code used to define both functions in the python + namespace. NOTE: It is possible to provide user access to other paramters of + the SPA algorithm through modifying this file +* `setup.py`: a distutils file which performs the compiling of the cython code The cython compilation process produces two files: -* ``spa_py.c``: an intermediate cython c file -* ``spa_py.so``: the python module which can be imported into a namespace +* `spa_py.c`: an intermediate cython c file +* `spa_py.so` or `spa_py..pyd`: the python module which + can be imported into a namespace -To process the original 5 files, -use the following shell command inside this folder - - $ python setup.py build_ext --inplace +To create the SPA Python extension, use the following shell command inside this +folder: + + $ python setup.py build_ext --inplace + +There are four optional keyword arguments `delta_ut1=0`, `slope=30.0`, +`azm_rotation=-10`, `atmos_refract` that effect four optional return values +`incidence`, `suntransit`, `sunrise`, and `sunset`. If not given, the defaults +shown are used. + +There is an example in `spa_py_example.py` that contains a test function called +`spa_calc_example` that users can use to check that the result is consistent +with expected values: + + >>> from spa_py_example import spa_calc_example + >>> r = spa_calc_example() + { + 'year': 2004, + 'month': 10, + 'day': 17, + 'hour': 12, + 'minute': 30, + 'second': 30.0, + 'delta_ut1': 0.0, + 'delta_t': 67.0, + 'time_zone': -7.0, + 'longitude': -105.1786, + 'latitude': 39.742476, + 'elevation': 1830.14, + 'pressure': 820.0, + 'temperature': 11.0, + 'slope': 30.0, + 'azm_rotation': -10.0, + 'atmos_refract': 0.5667, + 'function': 3, + 'e0': 39.59209464796398, + 'e': 39.60858878898177, + 'zenith': 50.39141121101823, + 'azimuth_astro': 14.311961805946808, + 'azimuth': 194.3119618059468, + 'incidence': 25.42168493680471, + 'suntransit': 11.765833793714224, + 'sunrise': 6.22578372122376, + 'sunset': 17.320379610556166 + } diff --git a/pvlib/spa_c_files/SPA_NOTICE.md b/pvlib/spa_c_files/SPA_NOTICE.md index 70ee756728..e7f806fc74 100644 --- a/pvlib/spa_c_files/SPA_NOTICE.md +++ b/pvlib/spa_c_files/SPA_NOTICE.md @@ -1,5 +1,39 @@ -NOTICE -Copyright © 2008-2011 Alliance for Sustainable Energy, LLC, All Rights Reserved -The Solar Position Algorithm ("Software") is code in development prepared by employees of the Alliance for Sustainable Energy, LLC, (hereinafter the "Contractor"), under Contract No. DE-AC36-08GO28308 ("Contract") with the U.S. Department of Energy (the "DOE"). The United States Government has been granted for itself and others acting on its behalf a paid-up, non-exclusive, irrevocable, worldwide license in the Software to reproduce, prepare derivative works, and perform publicly and display publicly. Beginning five (5) years after the date permission to assert copyright is obtained from the DOE, and subject to any subsequent five (5) year renewals, the United States Government is granted for itself and others acting on its behalf a paid-up, non-exclusive, irrevocable, worldwide license in the Software to reproduce, prepare derivative works, distribute copies to the public, perform publicly and display publicly, and to permit others to do so. If the Contractor ceases to make this computer software available, it may be obtained from DOE's Office of Scientific and Technical Information's Energy Science and Technology Software Center (ESTSC) at P.O. Box 1020, Oak Ridge, TN 37831-1020. THIS SOFTWARE IS PROVIDED BY THE CONTRACTOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE CONTRACTOR OR THE U.S. GOVERNMENT BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER, INCLUDING BUT NOT LIMITED TO CLAIMS ASSOCIATED WITH THE LOSS OF DATA OR PROFITS, WHICH MAY RESULT FROM AN ACTION IN CONTRACT, NEGLIGENCE OR OTHER TORTIOUS CLAIM THAT ARISES OUT OF OR IN CONNECTION WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE. -The Software is being provided for internal, noncommercial purposes only and shall not be re-distributed. Please contact Jennifer Ramsey in the NREL Commercialization and Technology Transfer Office for information concerning a commercial license to use the Software. -As a condition of using the Software in an application, the developer of the application agrees to reference the use of the Software and make this Notice readily accessible to any end-user in a Help|About screen or equivalent manner. \ No newline at end of file +# NOTICE + +Copyright (c) 2008-2011 Alliance for Sustainable Energy, LLC, All Rights Reserved + +The Solar Position Algorithm ("Software") is code in development prepared by +employees of the Alliance for Sustainable Energy, LLC, (hereinafter the +"Contractor"), under Contract No. DE-AC36-08GO28308 ("Contract") with the +U.S. Department of Energy (the "DOE"). The United States Government has been +granted for itself and others acting on its behalf a paid-up, non-exclusive, +irrevocable, worldwide license in the Software to reproduce, prepare +derivative works, and perform publicly and display publicly. Beginning five +(5) years after the date permission to assert copyright is obtained from the +DOE, and subject to any subsequent five (5) year renewals, the United States +Government is granted for itself and others acting on its behalf a paid-up, +non-exclusive, irrevocable, worldwide license in the Software to reproduce, +prepare derivative works, distribute copies to the public, perform publicly +and display publicly, and to permit others to do so. If the Contractor ceases +to make this computer software available, it may be obtained from DOE's +Office of Scientific and Technical Information's Energy Science and +Technology Software Center (ESTSC) at P.O. Box 1020, Oak Ridge, TN +37831-1020. THIS SOFTWARE IS PROVIDED BY THE CONTRACTOR "AS IS" AND ANY +EXPRESS OR IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE CONTRACTOR OR THE U.S. GOVERNMENT BE LIABLE +FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER, +INCLUDING BUT NOT LIMITED TO CLAIMS ASSOCIATED WITH THE LOSS OF DATA OR +PROFITS, WHICH MAY RESULT FROM AN ACTION IN CONTRACT, NEGLIGENCE OR OTHER +TORTIOUS CLAIM THAT ARISES OUT OF OR IN CONNECTION WITH THE ACCESS, USE OR +PERFORMANCE OF THIS SOFTWARE. + +The Software is being provided for internal, noncommercial purposes only and +shall not be re-distributed. Please contact [Jean +Schulte](mailto:Jean.Schulte@nrel.gov) in the NREL Commercialization and +Technology Transfer Office for information concerning a commercial license to +use the Software. + +As a condition of using the Software in an application, the developer of the +application agrees to reference the use of the Software and make this Notice +readily accessible to any end-user in a Help|About screen or equivalent manner. diff --git a/pvlib/spa_c_files/cspa_py.pxd b/pvlib/spa_c_files/cspa_py.pxd index bcf533493f..0a6c56de14 100644 --- a/pvlib/spa_c_files/cspa_py.pxd +++ b/pvlib/spa_c_files/cspa_py.pxd @@ -1,40 +1,43 @@ cdef extern from "spa.h": - ctypedef struct spa_data: - int year - int month - int day - int hour - int minute - double second - double delta_ut1 - double delta_t - double timezone - double longitude - double latitude + ctypedef enum: + SPA_ZA, SPA_ZA_INC, SPA_ZA_RTS, SPA_ALL - double elevation + ctypedef struct spa_data: + int year + int month + int day + int hour + int minute + double second + double delta_ut1 + double delta_t + double time_zone + double longitude + double latitude - double pressure + double elevation - double temperature + double pressure - double slope + double temperature - double azm_rotation + double slope - double atmos_refract + double azm_rotation - int function + double atmos_refract - double e0 - double e - double zenith - double azimuth_astro - double azimuth - double incidence + int function - double suntransit - double sunrise - double sunset + double e0 + double e + double zenith + double azimuth_astro + double azimuth + double incidence - int spa_calculate(spa_data *spa) + double suntransit + double sunrise + double sunset + + int spa_calculate(spa_data *spa) diff --git a/pvlib/spa_c_files/setup.py b/pvlib/spa_c_files/setup.py index 7da5672ed9..65f43597ed 100644 --- a/pvlib/spa_c_files/setup.py +++ b/pvlib/spa_c_files/setup.py @@ -1,9 +1,34 @@ -#setup.py +# setup.py +import os from distutils.core import setup from distutils.extension import Extension from Cython.Build import cythonize +DIRNAME = os.path.dirname(__file__) + +# patch spa.c +with open(os.path.join(DIRNAME, 'spa.c'), 'rb') as f: + SPA_C = f.read() +# replace timezone with time_zone to avoid nameclash with the function +# __timezone which is defined by a MACRO in pyconfig.h as timezone +# see https://bugs.python.org/issue24643 +SPA_C = SPA_C.replace(b'timezone', b'time_zone') +with open(os.path.join(DIRNAME, 'spa.c'), 'wb') as f: + f.write(SPA_C) + +# patch spa.h +with open(os.path.join(DIRNAME, 'spa.h'), 'rb') as f: + SPA_H = f.read() +# replace timezone with time_zone to avoid nameclash with the function +# __timezone which is defined by a MACRO in pyconfig.h as timezone +# see https://bugs.python.org/issue24643 +SPA_H = SPA_H.replace(b'timezone', b'time_zone') +with open(os.path.join(DIRNAME, 'spa.h'), 'wb') as f: + f.write(SPA_H) + +SPA_SOURCES = [os.path.join(DIRNAME, src) for src in ['spa_py.pyx', 'spa.c']] + setup( - ext_modules = cythonize([Extension("spa_py", ["spa_py.pyx",'spa.c'])]) + ext_modules=cythonize([Extension('spa_py', SPA_SOURCES)]) ) diff --git a/pvlib/spa_c_files/spa_py.c b/pvlib/spa_c_files/spa_py.c deleted file mode 100644 index 28f9127762..0000000000 --- a/pvlib/spa_c_files/spa_py.c +++ /dev/null @@ -1,2074 +0,0 @@ -/* Generated by Cython 0.21.2 */ - -#define PY_SSIZE_T_CLEAN -#ifndef CYTHON_USE_PYLONG_INTERNALS -#ifdef PYLONG_BITS_IN_DIGIT -#define CYTHON_USE_PYLONG_INTERNALS 0 -#else -#include "pyconfig.h" -#ifdef PYLONG_BITS_IN_DIGIT -#define CYTHON_USE_PYLONG_INTERNALS 1 -#else -#define CYTHON_USE_PYLONG_INTERNALS 0 -#endif -#endif -#endif -#include "Python.h" -#ifndef Py_PYTHON_H - #error Python headers needed to compile C extensions, please install development version of Python. -#elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03020000) - #error Cython requires Python 2.6+ or Python 3.2+. -#else -#define CYTHON_ABI "0_21_2" -#include -#ifndef offsetof -#define offsetof(type, member) ( (size_t) & ((type*)0) -> member ) -#endif -#if !defined(WIN32) && !defined(MS_WINDOWS) - 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- if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad; - if (cmp == 0) goto arg_passed_twice; - argname++; - } - } - } else - goto invalid_keyword_type; - if (kwds2) { - if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad; - } else { - goto invalid_keyword; - } - } - return 0; -arg_passed_twice: - __Pyx_RaiseDoubleKeywordsError(function_name, key); - goto bad; -invalid_keyword_type: - PyErr_Format(PyExc_TypeError, - "%.200s() keywords must be strings", function_name); - goto bad; -invalid_keyword: - PyErr_Format(PyExc_TypeError, - #if PY_MAJOR_VERSION < 3 - "%.200s() got an unexpected keyword argument '%.200s'", - function_name, PyString_AsString(key)); - #else - "%s() got an unexpected keyword argument '%U'", - function_name, key); - #endif -bad: - return -1; -} - -static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line) { - int start = 0, mid = 0, end = count - 1; - if (end >= 0 && code_line > entries[end].code_line) { - return count; - } - while (start < end) { - mid = (start + end) / 2; - if (code_line < entries[mid].code_line) { - end = mid; - } else if (code_line > entries[mid].code_line) { - start = mid + 1; - } else { - return mid; - } - } - if (code_line <= entries[mid].code_line) { - return mid; - } else { - return mid + 1; - } -} -static PyCodeObject *__pyx_find_code_object(int code_line) { - PyCodeObject* code_object; - int pos; - if (unlikely(!code_line) || unlikely(!__pyx_code_cache.entries)) { - return NULL; - } - pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line); - if (unlikely(pos >= __pyx_code_cache.count) || unlikely(__pyx_code_cache.entries[pos].code_line != code_line)) { - return NULL; - } - code_object = __pyx_code_cache.entries[pos].code_object; - Py_INCREF(code_object); - return code_object; -} -static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object) { - int pos, i; - __Pyx_CodeObjectCacheEntry* entries = __pyx_code_cache.entries; - if (unlikely(!code_line)) { - return; - } - if (unlikely(!entries)) { - entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Malloc(64*sizeof(__Pyx_CodeObjectCacheEntry)); - if (likely(entries)) { - __pyx_code_cache.entries = entries; - __pyx_code_cache.max_count = 64; - __pyx_code_cache.count = 1; - entries[0].code_line = code_line; - entries[0].code_object = code_object; - Py_INCREF(code_object); - } - return; - } - pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line); - if ((pos < __pyx_code_cache.count) && unlikely(__pyx_code_cache.entries[pos].code_line == code_line)) { - PyCodeObject* tmp = entries[pos].code_object; - entries[pos].code_object = code_object; - Py_DECREF(tmp); - return; - } - if (__pyx_code_cache.count == __pyx_code_cache.max_count) { - int new_max = __pyx_code_cache.max_count + 64; - entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Realloc( - __pyx_code_cache.entries, (size_t)new_max*sizeof(__Pyx_CodeObjectCacheEntry)); - if (unlikely(!entries)) { - return; - } - __pyx_code_cache.entries = entries; - __pyx_code_cache.max_count = new_max; - } - for (i=__pyx_code_cache.count; i>pos; i--) { - entries[i] = entries[i-1]; - } - entries[pos].code_line = code_line; - entries[pos].code_object = code_object; - __pyx_code_cache.count++; - Py_INCREF(code_object); -} - -#include "compile.h" -#include "frameobject.h" -#include "traceback.h" -static PyCodeObject* __Pyx_CreateCodeObjectForTraceback( - const char *funcname, int c_line, - int py_line, const char *filename) { - PyCodeObject *py_code = 0; - PyObject *py_srcfile = 0; - PyObject *py_funcname = 0; - #if PY_MAJOR_VERSION < 3 - py_srcfile = PyString_FromString(filename); - #else - py_srcfile = PyUnicode_FromString(filename); - #endif - if (!py_srcfile) goto bad; - if (c_line) { - #if PY_MAJOR_VERSION < 3 - py_funcname = PyString_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line); - #else - py_funcname = PyUnicode_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line); - #endif - } - else { - #if PY_MAJOR_VERSION < 3 - py_funcname = PyString_FromString(funcname); - #else - py_funcname = PyUnicode_FromString(funcname); - #endif - } - if (!py_funcname) goto bad; - py_code = __Pyx_PyCode_New( - 0, - 0, - 0, - 0, - 0, - __pyx_empty_bytes, /*PyObject *code,*/ - __pyx_empty_tuple, /*PyObject *consts,*/ - __pyx_empty_tuple, /*PyObject *names,*/ - __pyx_empty_tuple, /*PyObject *varnames,*/ - __pyx_empty_tuple, /*PyObject *freevars,*/ - __pyx_empty_tuple, /*PyObject *cellvars,*/ - py_srcfile, /*PyObject *filename,*/ - py_funcname, /*PyObject *name,*/ - py_line, - __pyx_empty_bytes /*PyObject *lnotab*/ - ); - Py_DECREF(py_srcfile); - Py_DECREF(py_funcname); - return py_code; -bad: - Py_XDECREF(py_srcfile); - Py_XDECREF(py_funcname); - return NULL; -} -static void __Pyx_AddTraceback(const char *funcname, int c_line, - int py_line, const char *filename) { - PyCodeObject *py_code = 0; - PyFrameObject *py_frame = 0; - py_code = __pyx_find_code_object(c_line ? c_line : py_line); - if (!py_code) { - py_code = __Pyx_CreateCodeObjectForTraceback( - funcname, c_line, py_line, filename); - if (!py_code) goto bad; - __pyx_insert_code_object(c_line ? c_line : py_line, py_code); - } - py_frame = PyFrame_New( - PyThreadState_GET(), /*PyThreadState *tstate,*/ - py_code, /*PyCodeObject *code,*/ - __pyx_d, /*PyObject *globals,*/ - 0 /*PyObject *locals*/ - ); - if (!py_frame) goto bad; - py_frame->f_lineno = py_line; - PyTraceBack_Here(py_frame); -bad: - Py_XDECREF(py_code); - Py_XDECREF(py_frame); -} - -#define __PYX_VERIFY_RETURN_INT(target_type, func_type, func_value) \ - { \ - func_type value = func_value; \ - if (sizeof(target_type) < sizeof(func_type)) { \ - if (unlikely(value != (func_type) (target_type) value)) { \ - func_type zero = 0; \ - if (is_unsigned && unlikely(value < zero)) \ - goto raise_neg_overflow; \ - else \ - goto raise_overflow; \ - } \ - } \ - return (target_type) value; \ - } - -#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3 - #if CYTHON_USE_PYLONG_INTERNALS - #include "longintrepr.h" - #endif -#endif - -static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) { - const int neg_one = (int) -1, const_zero = 0; - const int is_unsigned = neg_one > const_zero; -#if PY_MAJOR_VERSION < 3 - if (likely(PyInt_Check(x))) { - if (sizeof(int) < sizeof(long)) { - __PYX_VERIFY_RETURN_INT(int, long, PyInt_AS_LONG(x)) - } else { - long val = PyInt_AS_LONG(x); - if (is_unsigned && unlikely(val < 0)) { - goto raise_neg_overflow; - } - return (int) val; - } - } else -#endif - if (likely(PyLong_Check(x))) { - if (is_unsigned) { -#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3 - #if CYTHON_USE_PYLONG_INTERNALS - switch (Py_SIZE(x)) { - case 0: return 0; - case 1: __PYX_VERIFY_RETURN_INT(int, digit, ((PyLongObject*)x)->ob_digit[0]); - } - #endif -#endif - if (unlikely(Py_SIZE(x) < 0)) { - goto raise_neg_overflow; - } - if (sizeof(int) <= sizeof(unsigned long)) { - __PYX_VERIFY_RETURN_INT(int, unsigned long, PyLong_AsUnsignedLong(x)) - } else if (sizeof(int) <= sizeof(unsigned long long)) { - __PYX_VERIFY_RETURN_INT(int, unsigned long long, PyLong_AsUnsignedLongLong(x)) - } - } else { -#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3 - #if CYTHON_USE_PYLONG_INTERNALS - switch (Py_SIZE(x)) { - case 0: return 0; - case 1: __PYX_VERIFY_RETURN_INT(int, digit, +(((PyLongObject*)x)->ob_digit[0])); - case -1: __PYX_VERIFY_RETURN_INT(int, sdigit, -(sdigit) ((PyLongObject*)x)->ob_digit[0]); - } - #endif -#endif - if (sizeof(int) <= sizeof(long)) { - __PYX_VERIFY_RETURN_INT(int, long, PyLong_AsLong(x)) - } else if (sizeof(int) <= sizeof(long long)) { - __PYX_VERIFY_RETURN_INT(int, long long, PyLong_AsLongLong(x)) - } - } - { -#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray) - PyErr_SetString(PyExc_RuntimeError, - "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers"); -#else - int val; - PyObject *v = __Pyx_PyNumber_Int(x); - #if PY_MAJOR_VERSION < 3 - if (likely(v) && !PyLong_Check(v)) { - PyObject *tmp = v; - v = PyNumber_Long(tmp); - Py_DECREF(tmp); - } - #endif - if (likely(v)) { - int one = 1; int is_little = (int)*(unsigned char *)&one; - unsigned char *bytes = (unsigned char *)&val; - int ret = _PyLong_AsByteArray((PyLongObject *)v, - bytes, sizeof(val), - is_little, !is_unsigned); - Py_DECREF(v); - if (likely(!ret)) - return val; - } -#endif - return (int) -1; - } - } else { - int val; - PyObject *tmp = __Pyx_PyNumber_Int(x); - if (!tmp) return (int) -1; - val = __Pyx_PyInt_As_int(tmp); - Py_DECREF(tmp); - return val; - } -raise_overflow: - PyErr_SetString(PyExc_OverflowError, - "value too large to convert to int"); - return (int) -1; -raise_neg_overflow: - PyErr_SetString(PyExc_OverflowError, - "can't convert negative value to int"); - return (int) -1; -} - -static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value) { - const int neg_one = (int) -1, const_zero = 0; - const int is_unsigned = neg_one > const_zero; - if (is_unsigned) { - if (sizeof(int) < sizeof(long)) { - return PyInt_FromLong((long) value); - } else if (sizeof(int) <= sizeof(unsigned long)) { - return PyLong_FromUnsignedLong((unsigned long) value); - } else if (sizeof(int) <= sizeof(unsigned long long)) { - return PyLong_FromUnsignedLongLong((unsigned long long) value); - } - } else { - if (sizeof(int) <= sizeof(long)) { - return PyInt_FromLong((long) value); - } else if (sizeof(int) <= sizeof(long long)) { - return PyLong_FromLongLong((long long) value); - } - } - { - int one = 1; int little = (int)*(unsigned char *)&one; - unsigned char *bytes = (unsigned char *)&value; - return _PyLong_FromByteArray(bytes, sizeof(int), - little, !is_unsigned); - } -} - -static PyObject* __pyx_convert__to_py_spa_data(spa_data s) { - PyObject* res; - PyObject* member; - res = PyDict_New(); if (res == NULL) return NULL; - member = __Pyx_PyInt_From_int(s.year); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_year, member) < 0) goto bad; - Py_DECREF(member); - member = __Pyx_PyInt_From_int(s.month); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_month, member) < 0) goto bad; - Py_DECREF(member); - member = __Pyx_PyInt_From_int(s.day); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_day, member) < 0) goto bad; - Py_DECREF(member); - member = __Pyx_PyInt_From_int(s.hour); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_hour, member) < 0) goto bad; - Py_DECREF(member); - member = __Pyx_PyInt_From_int(s.minute); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_minute, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.second); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_second, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.delta_ut1); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_delta_ut1, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.delta_t); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_delta_t, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.timezone); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_timezone, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.longitude); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_longitude, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.latitude); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_latitude, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.elevation); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_elevation, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.pressure); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_pressure, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.temperature); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_temperature, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.slope); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_slope, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.azm_rotation); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_azm_rotation, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.atmos_refract); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_atmos_refract, member) < 0) goto bad; - Py_DECREF(member); - member = __Pyx_PyInt_From_int(s.function); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_function, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.e0); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_e0, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.e); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_e, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.zenith); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_zenith, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.azimuth_astro); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_azimuth_astro, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.azimuth); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_azimuth, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.incidence); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_incidence, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.suntransit); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_suntransit, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.sunrise); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_sunrise, member) < 0) goto bad; - Py_DECREF(member); - member = PyFloat_FromDouble(s.sunset); if (member == NULL) goto bad; - if (PyDict_SetItem(res, __pyx_n_s_sunset, member) < 0) goto bad; - Py_DECREF(member); - return res; - bad: - Py_XDECREF(member); - Py_DECREF(res); - return NULL; -} -static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) { - const long neg_one = (long) -1, const_zero = 0; - const int is_unsigned = neg_one > const_zero; - if (is_unsigned) { - if (sizeof(long) < sizeof(long)) { - return PyInt_FromLong((long) value); - } else if (sizeof(long) <= sizeof(unsigned long)) { - return PyLong_FromUnsignedLong((unsigned long) value); - } else if (sizeof(long) <= sizeof(unsigned long long)) { - return PyLong_FromUnsignedLongLong((unsigned long long) value); - } - } else { - if (sizeof(long) <= sizeof(long)) { - return PyInt_FromLong((long) value); - } else if (sizeof(long) <= sizeof(long long)) { - return PyLong_FromLongLong((long long) value); - } - } - { - int one = 1; int little = (int)*(unsigned char *)&one; - unsigned char *bytes = (unsigned char *)&value; - return _PyLong_FromByteArray(bytes, sizeof(long), - little, !is_unsigned); - } -} - -static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) { - const long neg_one = (long) -1, const_zero = 0; - const int is_unsigned = neg_one > const_zero; -#if PY_MAJOR_VERSION < 3 - if (likely(PyInt_Check(x))) { - if (sizeof(long) < sizeof(long)) { - __PYX_VERIFY_RETURN_INT(long, long, PyInt_AS_LONG(x)) - } else { - long val = PyInt_AS_LONG(x); - if (is_unsigned && unlikely(val < 0)) { - goto raise_neg_overflow; - } - return (long) val; - } - } else -#endif - if (likely(PyLong_Check(x))) { - if (is_unsigned) { -#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3 - #if CYTHON_USE_PYLONG_INTERNALS - switch (Py_SIZE(x)) { - case 0: return 0; - case 1: __PYX_VERIFY_RETURN_INT(long, digit, ((PyLongObject*)x)->ob_digit[0]); - } - #endif -#endif - if (unlikely(Py_SIZE(x) < 0)) { - goto raise_neg_overflow; - } - if (sizeof(long) <= sizeof(unsigned long)) { - __PYX_VERIFY_RETURN_INT(long, unsigned long, PyLong_AsUnsignedLong(x)) - } else if (sizeof(long) <= sizeof(unsigned long long)) { - __PYX_VERIFY_RETURN_INT(long, unsigned long long, PyLong_AsUnsignedLongLong(x)) - } - } else { -#if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3 - #if CYTHON_USE_PYLONG_INTERNALS - switch (Py_SIZE(x)) { - case 0: return 0; - case 1: __PYX_VERIFY_RETURN_INT(long, digit, +(((PyLongObject*)x)->ob_digit[0])); - case -1: __PYX_VERIFY_RETURN_INT(long, sdigit, -(sdigit) ((PyLongObject*)x)->ob_digit[0]); - } - #endif -#endif - if (sizeof(long) <= sizeof(long)) { - __PYX_VERIFY_RETURN_INT(long, long, PyLong_AsLong(x)) - } else if (sizeof(long) <= sizeof(long long)) { - __PYX_VERIFY_RETURN_INT(long, long long, PyLong_AsLongLong(x)) - } - } - { -#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray) - PyErr_SetString(PyExc_RuntimeError, - "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers"); -#else - long val; - PyObject *v = __Pyx_PyNumber_Int(x); - #if PY_MAJOR_VERSION < 3 - if (likely(v) && !PyLong_Check(v)) { - PyObject *tmp = v; - v = PyNumber_Long(tmp); - Py_DECREF(tmp); - } - #endif - if (likely(v)) { - int one = 1; int is_little = (int)*(unsigned char *)&one; - unsigned char *bytes = (unsigned char *)&val; - int ret = _PyLong_AsByteArray((PyLongObject *)v, - bytes, sizeof(val), - is_little, !is_unsigned); - Py_DECREF(v); - if (likely(!ret)) - return val; - } -#endif - return (long) -1; - } - } else { - long val; - PyObject *tmp = __Pyx_PyNumber_Int(x); - if (!tmp) return (long) -1; - val = __Pyx_PyInt_As_long(tmp); - Py_DECREF(tmp); - return val; - } -raise_overflow: - PyErr_SetString(PyExc_OverflowError, - "value too large to convert to long"); - return (long) -1; -raise_neg_overflow: - PyErr_SetString(PyExc_OverflowError, - "can't convert negative value to long"); - return (long) -1; -} - -static int __Pyx_check_binary_version(void) { - char ctversion[4], rtversion[4]; - PyOS_snprintf(ctversion, 4, "%d.%d", PY_MAJOR_VERSION, PY_MINOR_VERSION); - PyOS_snprintf(rtversion, 4, "%s", Py_GetVersion()); - if (ctversion[0] != rtversion[0] || ctversion[2] != rtversion[2]) { - char message[200]; - PyOS_snprintf(message, sizeof(message), - "compiletime version %s of module '%.100s' " - "does not match runtime version %s", - ctversion, __Pyx_MODULE_NAME, rtversion); - return PyErr_WarnEx(NULL, message, 1); - } - return 0; -} - -static int __Pyx_InitStrings(__Pyx_StringTabEntry *t) { - while (t->p) { - #if PY_MAJOR_VERSION < 3 - if (t->is_unicode) { - *t->p = PyUnicode_DecodeUTF8(t->s, t->n - 1, NULL); - } else if (t->intern) { - *t->p = PyString_InternFromString(t->s); - } else { - *t->p = PyString_FromStringAndSize(t->s, t->n - 1); - } - #else - if (t->is_unicode | t->is_str) { - if (t->intern) { - *t->p = PyUnicode_InternFromString(t->s); - } else if (t->encoding) { - *t->p = PyUnicode_Decode(t->s, t->n - 1, t->encoding, NULL); - } else { - *t->p = PyUnicode_FromStringAndSize(t->s, t->n - 1); 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- PyObject *x; -#if PY_MAJOR_VERSION < 3 - if (likely(PyInt_CheckExact(b))) - return PyInt_AS_LONG(b); -#endif - if (likely(PyLong_CheckExact(b))) { - #if CYTHON_COMPILING_IN_CPYTHON && PY_MAJOR_VERSION >= 3 - #if CYTHON_USE_PYLONG_INTERNALS - switch (Py_SIZE(b)) { - case -1: return -(sdigit)((PyLongObject*)b)->ob_digit[0]; - case 0: return 0; - case 1: return ((PyLongObject*)b)->ob_digit[0]; - } - #endif - #endif - return PyLong_AsSsize_t(b); - } - x = PyNumber_Index(b); - if (!x) return -1; - ival = PyInt_AsSsize_t(x); - Py_DECREF(x); - return ival; -} -static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t ival) { - return PyInt_FromSize_t(ival); -} - - -#endif /* Py_PYTHON_H */ diff --git a/pvlib/spa_c_files/spa_py.pyx b/pvlib/spa_c_files/spa_py.pyx index 2359045a63..10b89eaaea 100644 --- a/pvlib/spa_c_files/spa_py.pyx +++ b/pvlib/spa_c_files/spa_py.pyx @@ -1,45 +1,30 @@ cimport cspa_py -def spa_calc(year,month,day,hour,minute,second,timezone,latitude,longitude,elevation,pressure,temperature,delta_t): - cdef cspa_py.spa_data spa +def spa_calc(year, month, day, hour, minute, second, time_zone, latitude, + longitude, elevation, pressure, temperature, delta_t, + delta_ut1=0, slope=30.0, azm_rotation=-10, atmos_refract=0.5667): - spa.year = year - spa.month = month - spa.day = day - spa.hour = hour - spa.minute = minute - spa.second = second - spa.timezone = timezone - spa.delta_ut1 = 0 - spa.delta_t = delta_t - spa.longitude = longitude - spa.latitude = latitude - spa.elevation = elevation - spa.pressure = pressure - spa.temperature = temperature - spa.slope = 30 - spa.azm_rotation = -10 - spa.atmos_refract = 0.5667 + cdef cspa_py.spa_data spa - err=cspa_py.spa_calculate(&spa) + spa.year = year + spa.month = month + spa.day = day + spa.hour = hour + spa.minute = minute + spa.second = second + spa.time_zone = time_zone + spa.delta_ut1 = delta_ut1 + spa.delta_t = delta_t + spa.longitude = longitude + spa.latitude = latitude + spa.elevation = elevation + spa.pressure = pressure + spa.temperature = temperature + spa.slope = slope + spa.azm_rotation = azm_rotation + spa.atmos_refract = atmos_refract + spa.function = cspa_py.SPA_ALL - return spa - + err = cspa_py.spa_calculate(&spa) -#spa.year = 2004 -#spa.month = 10 -#spa.day = 17 -#spa.hour = 12 -#spa.minute = 30 -#spa.second = 30 -#spa.timezone = -7.0 -#spa.delta_ut1 = 0 -#spa.delta_t = 67 -#spa.longitude = -105.1786 -#spa.latitude = 39.742476 -#spa.elevation = 1830.14 -#spa.pressure = 820 -#spa.temperature = 11 -#spa.slope = 30 -#spa.azm_rotation = -10 -#spa.atmos_refract = 0.5667 \ No newline at end of file + return spa diff --git a/pvlib/spa_c_files/spa_py_example.py b/pvlib/spa_c_files/spa_py_example.py new file mode 100644 index 0000000000..4b3cf3bc9d --- /dev/null +++ b/pvlib/spa_c_files/spa_py_example.py @@ -0,0 +1,44 @@ +from spa_py import spa_calc +import numpy as np + +EXPECTED = { + 'year': 2004, + 'month': 10, + 'day': 17, + 'hour': 12, + 'minute': 30, + 'second': 30.0, + 'delta_ut1': 0.0, + 'delta_t': 67.0, + 'time_zone': -7.0, + 'longitude': -105.1786, + 'latitude': 39.742476, + 'elevation': 1830.14, + 'pressure': 820.0, + 'temperature': 11.0, + 'slope': 30.0, + 'azm_rotation': -10.0, + 'atmos_refract': 0.5667, + 'function': 3, + 'e0': 39.59209464796398, + 'e': 39.60858878898177, + 'zenith': 50.39141121101823, + 'azimuth_astro': 14.311961805946808, + 'azimuth': 194.3119618059468, + 'incidence': 25.42168493680471, + 'suntransit': 11.765833793714224, + 'sunrise': 6.22578372122376, + 'sunset': 17.320379610556166 +} + + +def spa_calc_example(test=True): + result = spa_calc( + year=2004, month=10, day=17, hour=12, minute=30, second=30, + time_zone=-7, longitude=-105.1786, latitude=39.742476, + elevation=1830.14, pressure=820, temperature=11, delta_t=67 + ) + if test: + for fieldname, expected_value in EXPECTED.items(): + assert np.isclose(result[fieldname], expected_value) + return result diff --git a/setup.py b/setup.py index f37f872230..055ed77a21 100755 --- a/setup.py +++ b/setup.py @@ -44,7 +44,8 @@ ] TESTS_REQUIRE = ['pytest', 'pytest-cov', 'pytest-mock', 'nose'] EXTRAS_REQUIRE = { - 'optional': ['scipy', 'tables', 'numba', 'siphon', 'netcdf4', 'ephem'], + 'optional': ['scipy', 'tables', 'numba', 'siphon', 'netcdf4', + 'ephem', 'cython'], 'doc': ['sphinx', 'ipython', 'sphinx_rtd_theme', 'numpydoc', 'matplotlib'], 'test': TESTS_REQUIRE