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Fix sign(NAN) returning 1.

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Fixes #79036. sign(NAN) now returns 0.
This should not impact performance much in any way.
Adds a test for the NAN case. Updates the documentation to clarify the new behavior.
This commit is contained in:
AcatXIo 2023-09-09 11:30:11 +02:00
parent 8c1817f755
commit 7d69a5ba50
3 changed files with 8 additions and 3 deletions
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7
doc/classes/@GlobalScope.xml
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@ -1168,11 +1168,13 @@
<return type="Variant" />
<param index="0" name="x" type="Variant" />
<description>
Returns the same type of [Variant] as [param x], with [code]-1[/code] for negative values, [code]1[/code] for positive values, and [code]0[/code] for zeros. Supported types: [int], [float], [Vector2], [Vector2i], [Vector3], [Vector3i], [Vector4], [Vector4i].
Returns the same type of [Variant] as [param x], with [code]-1[/code] for negative values, [code]1[/code] for positive values, and [code]0[/code] for zeros. For [code]nan[/code] values it returns 0.
Supported types: [int], [float], [Vector2], [Vector2i], [Vector3], [Vector3i], [Vector4], [Vector4i].
[codeblock]
sign(-6.0) # Returns -1
sign(0.0) # Returns 0
sign(6.0) # Returns 1
sign(NAN) # Returns 0
sign(Vector3(-6.0, 0.0, 6.0)) # Returns (-1, 0, 1)
[/codeblock]
@ -1183,11 +1185,12 @@
<return type="float" />
<param index="0" name="x" type="float" />
<description>
Returns [code]-1.0[/code] if [param x] is negative, [code]1.0[/code] if [param x] is positive, and [code]0.0[/code] if [param x] is zero.
Returns [code]-1.0[/code] if [param x] is negative, [code]1.0[/code] if [param x] is positive, and [code]0.0[/code] if [param x] is zero. For [code]nan[/code] values of [param x] it returns 0.0.
[codeblock]
signf(-6.5) # Returns -1.0
signf(0.0) # Returns 0.0
signf(6.5) # Returns 1.0
signf(NAN) # Returns 0.0
[/codeblock]
</description>
</method>