Type casting integer to float ?

[RixtronixLAB]

Dear Members,

I want to convert uint32_t to float, the code :

unsigned int dat = 2248;
	float float_val;
	
	

    float_val = (double)(dat);                         
    NRF_LOG_INFO( "float_val = %.3f\n", float_val );  

It's returning nothing, what is missing here ?

Thanks

[Einar Thorsrud]

Hi,

There is a mistake in your code. your float_val variable is a float (32 bit), but you cast dat to a double (64 bit). So you should fix the fast so that you cast it to a float instead.

[Felix Tam]

uint32_t int_value;

float float_val;

float_val = *(float *)&int_value;

or memcpy(&float_val, &int_val, size_of(int_value);

[RixtronixLAB]

Hi Einar,

Thanks for the reply,

I will fix it and keep posted, thanks again

[RixtronixLAB]

then  NRF_LOG_INFO("Float number V2: %.2f",float_val); ?

[RixtronixLAB]

Snipped :

	unsigned int dat = 2248;
	
	

      
    float float_val = *(float *)&dat;	
    
	  NRF_LOG_INFO("Float number: "NRF_LOG_FLOAT_MARKER"\n\r",NRF_LOG_FLOAT(float_val));
	  NRF_LOG_INFO("Float number V2: %.2f",float_val);

I got 0.00 for float_val ??