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February 25, 2013, at 11:36 AM
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- corrected informations about return values. Thanks to Alan Barraclough for alertChanged line 15 from:

double cos (double __x) // returns cosine of x in radians

to:

double cos (double __x) // returns cosine of x

Changed lines 20-22 from:

double sin (double __x) // returns sine of x in radians double sqrt (double __x) // returns square root of x in radians double tan (double __x) // returns tangent of x in radians

to:

double sin (double __x) // returns sine of x double sqrt (double __x) // returns square root of x double tan (double __x) // returns tangent of x

January 20, 2013, at 08:08 PM
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- corrected definition of atan2(). Thanks Valentin Py for the alertChanged line 25 from:

double atan2 (double __y, // arc tangent of y/x

to:

double atan2 (double __y, double __x) // arc tangent of y/x

December 22, 2007, at 03:48 PM
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- Changed line 33 from:

to:

December 22, 2007, at 03:46 PM
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- Changed line 21 from:

double sqrt (double __x) returns square root of x in radians

to:

double sqrt (double __x) // returns square root of x in radians

December 22, 2007, at 03:27 PM
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- Changed line 18 from:

double modf (double __value, double *__iptr) //breaks the argument value into

to:

double modf (double __value, double *__iptr) // breaks the argument value into

Changed line 27 from:

double log10 (double __x) //logarithm of x to base 10.

to:

double log10 (double __x) // logarithm of x to base 10.

December 22, 2007, at 03:26 PM
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- Changed lines 29-30 from:

double square (double __x) // square of x

to:

double square (double __x) // square of x

December 22, 2007, at 03:10 PM
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- Changed line 15 from:

double cos(double __x) // returns cosine of x in radians

to:

double cos (double __x) // returns cosine of x in radians

December 22, 2007, at 03:10 PM
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- Deleted lines 28-29:

int isnan (double __x) // returns 1 if "not a number" int isinf (double __x) returns 1 if the argument x is positive or negative infinity

December 22, 2007, at 03:09 PM
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- Changed lines 3-5 from:

Arduino trig and exponential functions use the avr-libc library. The library includes a great number of useful mathematical functions, for manipulating floating point numbers.

to:

Arduino trig and exponential functions use the avr-libc library. The library includes a great number of useful mathematical functions for manipulating floating point numbers.

December 22, 2007, at 03:05 PM
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- Changed lines 3-4 from:

Arduino trig and exponential functions use the avr-libc library. The library includes a great number of useful mathematical functions, for manipulating floating point numbers. This is why you graduated from the Basic Stamp.

to:

Arduino trig and exponential functions use the avr-libc library. The library includes a great number of useful mathematical functions, for manipulating floating point numbers.

December 22, 2007, at 03:04 PM
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- Changed lines 3-4 from:

Arduino trig and exponential functions use the avr-libc library. The library includes a great number of useful mathematical functions, including trigonometric, and logarithmic functions. This is why you graduated from the Basic Stamp.

to:

Arduino trig and exponential functions use the avr-libc library. The library includes a great number of useful mathematical functions, for manipulating floating point numbers. This is why you graduated from the Basic Stamp.

December 22, 2007, at 03:02 PM
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- Changed lines 17-18 from:

double modf (double __value, double *__iptr) //breaks the argument value into integral and fractional parts

to:

double modf (double __value, double *__iptr) //breaks the argument value into

// integral and fractional parts

December 22, 2007, at 03:01 PM
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- Changed lines 3-10 from:

The AVR math library, which is included in your sketch by using the line

`#include <math.h> // (no semicolon)`

Includes a great number of useful mathematical functions, including trigonometric, and logarithmic functions. This is why you graduated from the Basic Stamp.

The Atmega8 chip, which is now dated, but still supported, does not have enough memory to be able use the math.h library so you will probably need to update to an Atmega168 if you wish to use any of these functions.

to:

Arduino trig and exponential functions use the avr-libc library. The library includes a great number of useful mathematical functions, including trigonometric, and logarithmic functions. This is why you graduated from the Basic Stamp.

The Atmega8 chip, which is now dated, but still supported, does not have enough memory to be able to use the math.h library so you will probably need to update to an Atmega168 if you wish to use any of these functions.

December 22, 2007, at 02:55 PM
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- Deleted lines 13-16:

` Someone email a small example to pbadger@verizon.net and I'll put it in here `

July 14, 2007, at 06:27 AM
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- Changed lines 7-8 from:

includes a great number of mathematical functions. This is why you graduated from the Basic Stamp.

to:

Includes a great number of useful mathematical functions, including trigonometric, and logarithmic functions. This is why you graduated from the Basic Stamp.

April 28, 2007, at 05:03 AM
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- Changed line 41 from:

11 See

to:

April 28, 2007, at 05:01 AM
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- Changed line 22 from:

double cos(double __x) // returns cosine of x in radians

to:

double cos(double __x) // returns cosine of x in radians

Changed lines 37-38 from:

double square (double __x) // square of x

to:

double square (double __x) // square of x

April 28, 2007, at 05:01 AM
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- Changed lines 22-23 from:

double cos(double __x) // returns cosine of x in radians double fabs (double __x) // absolute value of a float

to:

double cos(double __x) // returns cosine of x in radians double fabs (double __x) // absolute value of a float

Changed line 26 from:

double sin (double __x) // returns sine of x in radians

to:

double sin (double __x) // returns sine of x in radians

Changed lines 28-30 from:

double tan (double __x) // returns tangent of x in radians double exp (double __x) // function returns the exponential value of x. double atan (double __x) // arc tangent of x

to:

double tan (double __x) // returns tangent of x in radians double exp (double __x) // function returns the exponential value of x. double atan (double __x) // arc tangent of x

Changed line 32 from:

double log (double __x) // natural logarithm of x

to:

double log (double __x) // natural logarithm of x

April 28, 2007, at 05:00 AM
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- Changed line 23 from:

double fabs (double __x) //absolute value of a float

to:

double fabs (double __x) // absolute value of a float

April 28, 2007, at 04:59 AM
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- Changed lines 9-10 from:

The Atmega8 chip, which is now dated, but still supported does not have enough memory to be able use the math.h library so you will probably need to update to an Atmega168 if you wish to use any of these functions.

to:

The Atmega8 chip, which is now dated, but still supported, does not have enough memory to be able use the math.h library so you will probably need to update to an Atmega168 if you wish to use any of these functions.

April 28, 2007, at 04:58 AM
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- Added line 4:

Added line 6:

April 28, 2007, at 04:58 AM
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- Changed line 4 from:

{@#include <math.h> // (no semicolon)@]

to:

`#include <math.h> // (no semicolon)`

April 28, 2007, at 04:57 AM
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- Changed lines 3-4 from:

The AVR math library, which is included in your sketch by using the line `#include <math.h>`

(no semicolon)

to:

The AVR math library, which is included in your sketch by using the line {@#include <math.h> // (no semicolon)@]

April 28, 2007, at 04:56 AM
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- Changed lines 27-28 from:

double atan (double __x) __ATTR_CONST__ double atan2 (double __y, double __x) __ATTR_CONST__

to:

double atan (double __x) // arc tangent of x double atan2 (double __y, // arc tangent of y/x

April 28, 2007, at 04:53 AM
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- Changed lines 6-7 from:

The Atmega8 chip, which is now dated but still supported does not have enough memory to be able use the math.h library so you will probably need to update to an Atmega168 if you wish to use any of these functions.

to:

The Atmega8 chip, which is now dated, but still supported does not have enough memory to be able use the math.h library so you will probably need to update to an Atmega168 if you wish to use any of these functions.

Changed lines 13-14 from:

` Someone email a little example to pbadger@verizon.net and I'll put it in here `

to:

` Someone email a small example to pbadger@verizon.net and I'll put it in here `

April 28, 2007, at 04:51 AM
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- Changed lines 4-5 from:

includes a great number of mathematical functions.

to:

includes a great number of mathematical functions. This is why you graduated from the Basic Stamp.

Changed lines 15-17 from:

to:

This is just a partial list - check the docs for more obscure functions

April 28, 2007, at 04:49 AM
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- Changed lines 32-34 from:

double square (double __x) // square of x

to:

double square (double __x) // square of x

@]

April 28, 2007, at 04:49 AM
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- Added lines 1-32:

The AVR math library, which is included in your sketch by using the line `#include <math.h>`

(no semicolon)
includes a great number of mathematical functions.

The Atmega8 chip, which is now dated but still supported does not have enough memory to be able use the math.h library so you will probably need to update to an Atmega168 if you wish to use any of these functions.

The full docs for math.h may be found here

` Someone email a little example to pbadger@verizon.net and I'll put it in here `

[@ double cos(double __x) // returns cosine of x in radians double fabs (double __x) //absolute value of a float double fmod (double __x, double __y) // floating point modulo double modf (double __value, double *__iptr) //breaks the argument value into integral and fractional parts double sin (double __x) // returns sine of x in radians double sqrt (double __x) returns square root of x in radians double tan (double __x) // returns tangent of x in radians double exp (double __x) // function returns the exponential value of x. double atan (double __x) __ATTR_CONST__ double atan2 (double __y, double __x) __ATTR_CONST__ double log (double __x) // natural logarithm of x double log10 (double __x) //logarithm of x to base 10. double pow (double __x, double __y) // x to power of y int isnan (double __x) // returns 1 if "not a number" int isinf (double __x) returns 1 if the argument x is positive or negative infinity double square (double __x) // square of x