Add floatValue to ExecuTorch value (#10823)

Summary:

I think we can have an utility to return floats back.
I would not create a new tag, but just use the double value and return it as float if the user needs float

Reviewed By: shoumikhin

Differential Revision: D74603334

Author: Franco Meloni

extension/apple/ExecuTorch/Exported/ExecuTorchValue.h

@@ -40,6 +40,8 @@ typedef NSInteger ExecuTorchIntegerValue
     NS_SWIFT_BRIDGED_TYPEDEF NS_SWIFT_NAME(IntegerValue);
 typedef double ExecuTorchDoubleValue
     NS_SWIFT_BRIDGED_TYPEDEF NS_SWIFT_NAME(DoubleValue);
+    typedef float ExecuTorchFloatValue
+    NS_SWIFT_BRIDGED_TYPEDEF NS_SWIFT_NAME(FloatValue);
 
 /**
  * A dynamic value type used by ExecuTorch.
@@ -100,6 +102,13 @@ __attribute__((deprecated("This API is experimental.")))
  */
 @property(nonatomic, readonly) ExecuTorchDoubleValue doubleValue NS_SWIFT_NAME(double);
 
+/**
+ * The float value if the tag is ExecuTorchValueTagDouble.
+ *
+ * @return An float representing the float value.
+ */
+ @property(nonatomic, readonly) ExecuTorchFloatValue floatValue NS_SWIFT_NAME(float);
+
 /**
  * Returns YES if the value is of type None.
  *
@@ -149,6 +158,13 @@ __attribute__((deprecated("This API is experimental.")))
  */
 @property(nonatomic, readonly) BOOL isDouble;
 
+/**
+ * Returns YES if the value is a float.
+ *
+ * @return A BOOL indicating whether the value is a float.
+ */
+ @property(nonatomic, readonly) BOOL isFloat;
+
 /**
  * Creates an instance encapsulating a Tensor.
  *

extension/apple/ExecuTorch/Exported/ExecuTorchValue.mm

@@ -88,6 +88,12 @@ - (ExecuTorchDoubleValue)doubleValue {
   return [(ExecuTorchScalarValue)_value doubleValue];
 }
 
+- (ExecuTorchFloatValue)floatValue {
+  ET_CHECK(self.isFloat);
+  // EValue does not have a separate tag for float.
+  return [(ExecuTorchScalarValue)_value floatValue];
+}
+
 - (BOOL)isNone {
   return _tag == ExecuTorchValueTagNone;
 }
@@ -118,6 +124,10 @@ - (BOOL)isDouble {
   return _tag == ExecuTorchValueTagDouble;
 }
 
+- (BOOL)isFloat {
+  return _tag == ExecuTorchValueTagDouble;
+}
+
 - (BOOL)isEqualToValue:(nullable ExecuTorchValue *)other {
   if (!other) {
     return NO;