core: fix encoded value parser for signed and floating point numbers

jadx-samples/src/main/java/jadx/samples/AbstractTest.java

@@ -28,6 +28,12 @@ public abstract class AbstractTest {
 		}
 	}
 
+	public static void assertEquals(float a1, float a2) {
+		if (Float.compare(a1, a2) != 0) {
+			throw new AssertionError(a1 + " != " + a2);
+		}
+	}
+
 	public static void assertEquals(Object a1, Object a2) {
 		if (a1 == null) {
 			if (a2 != null)

jadx-samples/src/main/java/jadx/samples/TestAnnotationsParser.java

@@ -0,0 +1,42 @@
+package jadx.samples;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+public class TestAnnotationsParser extends AbstractTest {
+
+	@Target({ElementType.TYPE})
+	@Retention(RetentionPolicy.RUNTIME)
+	public static @interface A {
+		int i();
+
+		float f();
+	}
+
+	@A(i = -1, f = C1.FLOAT_CONST)
+	public static class C1 {
+		public static final float FLOAT_CONST = 3.14f;
+	}
+
+	@A(i = -1025, f = C2.FLOAT_CONST)
+	public static class C2 {
+		public static final float FLOAT_CONST = 0xFF0000;
+	}
+
+	public boolean testRun() {
+		A c1 = C1.class.getAnnotation(A.class);
+		assertEquals(c1.i(), -1);
+		assertEquals(c1.f(), C1.FLOAT_CONST);
+
+		A c2 = C2.class.getAnnotation(A.class);
+		assertEquals(c2.i(), -1025);
+		assertEquals(c2.f(), C2.FLOAT_CONST);
+		return true;
+	}
+
+	public static void main(String[] args) throws Exception {
+		new TestAnnotationsParser().testRun();
+	}
+}