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#include <stdlib.h>
#include <stdarg.h>
#include <Python.h>
#include "sf_error.h"
const char *sf_error_messages[] = {
"no error",
"singularity",
"underflow",
"overflow",
"too slow convergence",
"loss of precision",
"no result obtained",
"domain error",
"invalid input argument",
"other error",
NULL
};
static int print_error_messages = 0;
extern int wrap_PyUFunc_getfperr(void);
int sf_error_set_print(int flag)
{
int old_flag = print_error_messages;
print_error_messages = flag;
return old_flag;
}
int sf_error_get_print()
{
return print_error_messages;
}
void sf_error(const char *func_name, sf_error_t code, const char *fmt, ...)
{
char msg[2048], info[1024];
static PyObject *py_SpecialFunctionWarning = NULL;
va_list ap;
if (!print_error_messages) {
return;
}
if (func_name == NULL) {
func_name = "?";
}
if ((int)code < 0 || (int)code >= 10) {
code = SF_ERROR_OTHER;
}
if (fmt != NULL && fmt[0] != '\0') {
va_start(ap, fmt);
PyOS_vsnprintf(info, 1024, fmt, ap);
va_end(ap);
PyOS_snprintf(msg, 2048, "scipy.special/%s: (%s) %s",
func_name, sf_error_messages[(int)code], info);
}
else {
PyOS_snprintf(msg, 2048, "scipy.special/%s: %s",
func_name, sf_error_messages[(int)code]);
}
{
#ifdef WITH_THREAD
PyGILState_STATE save = PyGILState_Ensure();
#endif
if (PyErr_Occurred())
goto skip_warn;
if (py_SpecialFunctionWarning == NULL) {
PyObject *scipy_special = NULL;
scipy_special = PyImport_ImportModule("scipy.special");
if (scipy_special == NULL) {
PyErr_Clear();
goto skip_warn;
}
py_SpecialFunctionWarning = PyObject_GetAttrString(
scipy_special, "SpecialFunctionWarning");
if (py_SpecialFunctionWarning == NULL) {
PyErr_Clear();
goto skip_warn;
}
}
if (py_SpecialFunctionWarning != NULL) {
PyErr_WarnEx(py_SpecialFunctionWarning, msg, 1);
/*
* The return value is ignored! We rely on the fact that the
* Ufunc loop will call PyErr_Occurred() later on.
*/
}
skip_warn:
#ifdef WITH_THREAD
PyGILState_Release(save);
#endif
}
}
#define UFUNC_FPE_DIVIDEBYZERO 1
#define UFUNC_FPE_OVERFLOW 2
#define UFUNC_FPE_UNDERFLOW 4
#define UFUNC_FPE_INVALID 8
void sf_error_check_fpe(const char *func_name)
{
int status;
status = wrap_PyUFunc_getfperr();
if (status & UFUNC_FPE_DIVIDEBYZERO) {
sf_error(func_name, SF_ERROR_SINGULAR, "floating point division by zero");
}
if (status & UFUNC_FPE_UNDERFLOW) {
sf_error(func_name, SF_ERROR_UNDERFLOW, "floating point underflow");
}
if (status & UFUNC_FPE_OVERFLOW) {
sf_error(func_name, SF_ERROR_OVERFLOW, "floating point overflow");
}
if (status & UFUNC_FPE_INVALID) {
sf_error(func_name, SF_ERROR_DOMAIN, "floating point invalid value");
}
}
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