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pythonnet/pythonnet/src/runtime/pyfloat.cs at develop · davidanthoff/pythonnet · GitHub
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runtime
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pyfloat.cs
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runtime
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pyfloat.cs
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// ==========================================================================
// This software is subject to the provisions of the Zope Public License,
// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
// FOR A PARTICULAR PURPOSE.
// ==========================================================================
using
System
;
using
System
.
Runtime
.
InteropServices
;
namespace
Python
.
Runtime
{
/// <summary>
/// Represents a Python float object. See the documentation at
/// http://www.python.org/doc/current/api/floatObjects.html
/// </summary>
public
class
PyFloat
:
PyNumber
{
/// <summary>
/// PyFloat Constructor
/// </summary>
///
/// <remarks>
/// Creates a new PyFloat from an existing object reference. Note
/// that the instance assumes ownership of the object reference.
/// The object reference is not checked for type-correctness.
/// </remarks>
public
PyFloat
(
IntPtr
ptr
)
:
base
(
ptr
)
{
}
/// <summary>
/// PyFloat Constructor
/// </summary>
///
/// <remarks>
/// Copy constructor - obtain a PyFloat from a generic PyObject. An
/// ArgumentException will be thrown if the given object is not a
/// Python float object.
/// </remarks>
public
PyFloat
(
PyObject
o
)
:
base
(
)
{
if
(
!
IsFloatType
(
o
)
)
{
throw
new
ArgumentException
(
"object is not a float"
)
;
}
Runtime
.
Incref
(
o
.
obj
)
;
obj
=
o
.
obj
;
}
/// <summary>
/// PyFloat Constructor
/// </summary>
///
/// <remarks>
/// Creates a new Python float from a double value.
/// </remarks>
public
PyFloat
(
double
value
)
:
base
(
)
{
obj
=
Runtime
.
PyFloat_FromDouble
(
value
)
;
if
(
obj
==
IntPtr
.
Zero
)
{
throw
new
PythonException
(
)
;
}
}
/// <summary>
/// PyFloat Constructor
/// </summary>
///
/// <remarks>
/// Creates a new Python float from a string value.
/// </remarks>
public
PyFloat
(
string
value
)
:
base
(
)
{
PyString
s
=
new
PyString
(
value
)
;
obj
=
Runtime
.
PyFloat_FromString
(
s
.
obj
,
IntPtr
.
Zero
)
;
if
(
obj
==
IntPtr
.
Zero
)
{
throw
new
PythonException
(
)
;
}
}
/// <summary>
/// IsFloatType Method
/// </summary>
///
/// <remarks>
/// Returns true if the given object is a Python float.
/// </remarks>
public
static
bool
IsFloatType
(
PyObject
value
)
{
return
Runtime
.
PyFloat_Check
(
value
.
obj
)
;
}
/// <summary>
/// AsFloat Method
/// </summary>
///
/// <remarks>
/// <remarks>
/// Convert a Python object to a Python float if possible, raising
/// a PythonException if the conversion is not possible. This is
/// equivalent to the Python expression "float(object)".
/// </remarks>
public
static
PyFloat
AsFloat
(
PyObject
value
)
{
IntPtr
op
=
Runtime
.
PyNumber_Float
(
value
.
obj
)
;
if
(
op
==
IntPtr
.
Zero
)
{
throw
new
PythonException
(
)
;
}
return
new
PyFloat
(
op
)
;
}
}
}
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