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pythonnet/src/runtime/pyfloat.cs at update/NetCore21 · losttech/pythonnet · GitHub
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using
System
;
namespace
Python
.
Runtime
{
/// <summary>
/// Represents a Python float object. See the documentation at
/// PY3: https://docs.python.org/3/c-api/float.html
/// for details.
/// </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
(
FromObject
(
o
)
)
{
}
/// <summary>
/// PyFloat Constructor
/// </summary>
/// <remarks>
/// Creates a new Python float from a double value.
/// </remarks>
public
PyFloat
(
double
value
)
:
base
(
FromDouble
(
value
)
)
{
}
private
static
IntPtr
FromObject
(
PyObject
o
)
{
if
(
o
==
null
||
!
IsFloatType
(
o
)
)
{
throw
new
ArgumentException
(
"object is not a float"
)
;
}
Runtime
.
XIncref
(
o
.
obj
)
;
return
o
.
obj
;
}
private
static
IntPtr
FromDouble
(
double
value
)
{
IntPtr
val
=
Runtime
.
PyFloat_FromDouble
(
value
)
;
PythonException
.
ThrowIfIsNull
(
val
)
;
return
val
;
}
private
static
IntPtr
FromString
(
string
value
)
{
using
(
var
s
=
new
PyString
(
value
)
)
{
IntPtr
val
=
Runtime
.
PyFloat_FromString
(
s
.
obj
,
IntPtr
.
Zero
)
;
PythonException
.
ThrowIfIsNull
(
val
)
;
return
val
;
}
}
/// <summary>
/// PyFloat Constructor
/// </summary>
/// <remarks>
/// Creates a new Python float from a string value.
/// </remarks>
public
PyFloat
(
string
value
)
:
base
(
FromString
(
value
)
)
{
}
/// <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>
/// 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
)
;
PythonException
.
ThrowIfIsNull
(
op
)
;
return
new
PyFloat
(
op
)
;
}
}
}
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