#include <math.h>

Forum 2005-2010 (read only) Software Syntax & Programs
1

Hello,

I am new to Arduino and electrical circuts as a whole but I am trying to get a thermistor to work with the Arduino and I have found some codes, but I cannot figure out how to include the #include <math.h> file or what I need to do to include it. I went through all the library files on my Arduino window via sketch-> import library but the math.h file is not one of the available files. I have searched everywhere but cannot figure it out. Thanks to anone who can help.
-H-

2

What error does this return?

#include <math.h>
void loop ()
{}
void setup ()
{}
3

hmmmm I just insert this code into the Arduino sketch and compile right...?

I didn't get any error message but the math.h file isn't red like the other .h files... is this right...?

If so maybe I have the thermistor set up wrong. I have one wire to pos and a 10k ohm resistor to neg and the other side of resistor connecting to a horizontal line with the 0 pin and the other wire of the transistor.

thanks for the help and such a quick reply too...

4

If it didn't give you an error, then it probably read math.h just fine. You need to use the "import library" command for "third party" libraries from arduino-specific locations, but math.h is a standard C thing, and the compiler knows how to find it without any special help...

5

but math.h is a standard C thing, and the compiler knows how to find it without any special help...

It is also included by default - so there is no need to explicitly add the header to the main sketch file.

Here's a list of the standard headers included:

#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <avr/interrupt.h>
#include "wiring.h"

#ifdef __cplusplus
#include "HardwareSerial.h"
#endif
6

Thanks for the help guys... I guess it was including the math.h file...

duh on my part