atof is not working

[kandhu26]

Hi everyone,

     I am using K60 & MQX4.0 version. atoi is working fine for me & atof is not working. I have enabled _EWL_FLOATING_POINT in ansi_params.h too. Still atof is not working for me.. Please anyone help me in these.

[kandhu26 · Accepted solution]

Hi guys,

     Thank you for all your support.. Today i fixed the bug.. When it was not working i have included only #include <string.h>.

Now i have included #include <stdlib.h> too.. Now the following code working perfectly with atof feature..

	int integer;
	double flot;
	uchar ascii_int[] = "12345";
	uchar ascii_float[] = "54321.54321"; integer = atoi((const char*)ascii_int); printf("The integer value is %d\n\r", integer); flot = atof((const char*)ascii_float); printf("The float value is %f\n\r", flot);

The output follows,

The integer value is 12345

The flot value is 54321.54321

     The one more change required to make it work atof was type casting..

[deepakrana]

Finally u got it working , I told you so

Best Regards

Deepak Kumar Rana

Field Application Engineer

H.P: +91 9916927803

Freescale Semiconductors

Campus 1C ,4th Floor Ecospace

Sarjapur Outer Ring Road

Banglore India 560037

[c0170]

Hello kandha samy,

any code for sharing? How do you invoke atoi and how atof? How does atof fail?

Please read a following post which explains what you should include in your bug/problem report:

How to post in the MQX section and get an answer!

Regards,

c0170

[kandhu26]

Hi Martin,

          Thank you for your reply.. Here is the test code which i have tried..

	int integer;
	float flot;
	uchar ascii_int[] = "12345";
	uchar ascii_float[] = "54321.54321"; integer = atoi(ascii_int); printf("The integer value is %d\n\r", integer); flot = atof(ascii_float); printf("The float value is %f\n\r", flot);

The output follows,

The integer value is 12345

The flot value is 1643769856.000000

So the output shows atoi is working fine & atof is not giving proper output. To make sure that there is some problem with atof i have done one more test..

	int integer;
	float flot;
	uchar ascii_int[] = "12345";
	uchar ascii_float[] = "54321.54321"; integer = atoi(ascii_int); printf("The integer value is %d\n\r", integer); integer = atoi(ascii_float); printf("The float value is %d\n\r", integer);

The output follows,

The integer value is 12345

The flot value is 54321

So, The above test that i concluded atoi is working perfectly & there is some issue with atof...

[deepakrana]

hi

This is a CW compiler problem

Needs a library bug fix.

[deepakrana]

Hi

In the properties of the project in the Librarian you need to choose the MOdel  C9xx

Print format  int_FP

In the MQX BSP you need to enable

#define MQX_INCLUDE_FLOATING_POINT_IO  1

This should solve the problem in MQX system