Aardio - does not declare the method of directly passing float values

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Aardio - API Call analysis _ Luguangqing's blog -CSDN Blog _aardio

Because I think there is less relevant information , I hereby send another message , For reference .

because aardio Call directly without declaration dll When , This is how to deal with numerical parameters ：

All numerical parameters are treated as 32 position int integer .（ Less than 32 An integer 、 Enumeration type 、8 Bit or 32 position bool All values follow int 32 Digit values are compatible ）

therefore , If you want to pass float data type , How to deliver ？

Here are two dll Function to test ：

aardio The calling code is as follows （ The test process is not explained in detail , Let's go straight to the results ）：

import console; 

var dll=..raw.loadDll("\show.dll")
 
// Value transfer test ：
 
    // Numerical data structure 
        
        dll.show_byvalue(123.456)
        // error （float It is automatically processed as an integer type when passing , The value has changed ）
        
        dll.show_byvalue(..raw.float(123.456))
        // correct （ Constructed as decimal type ,aardio Automatically recognize and automatically adjust the parameter type to float）
 
    // Addressable data structure 
        
        dll.show_byvalue({float v=123.456})
        // error （ The message is “ Address ”, No “ The number ”, Values are not the same ）
        
        dll.show_byvalue(..raw.float(123.456,true))
        // error （ The message is “ Address ”, No “ The number ”, Values are not the same ）
 
    // Numerical type , Data type conversion , take float Change the value to int The number , Then pass 
        
        dll.show_byvalue(raw.convert({ float f = 123.456 },{int i}).i)
        // correct （ use int The number , forge float Type of memory data , Can be dll Correctly resolve to float The number . The principle is the same as union）
 
    // All in all , It is necessary to put the right “ value ” Pass on the past .
 
// Address test ：
 
    // Numerical data structure 
 
        dll.show_byaddr(123.456)
        // error , Illegal address , Abnormal protection , Program exit 
 
        dll.show_byaddr(..raw.float(123.456))
        // error , Illegal address , Abnormal protection , Program exit 
 
    // Addressable data structure 
    
        dll.show_byaddr({float v=123.456})
        // correct 
 
        dll.show_byaddr(..raw.float(123.456,true))
        // correct 
 
    // Addressing is relatively simple , Other methods are not tested one by one .
    
console.pause(true);