https://code-reference.com/ 2026-05-18T16:47:23+02:00 https://code-reference.com/ https://code-reference.com/ttps://code-reference.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2024-02-16T01:04:20+02:00 https://code-reference.com/arduino/math/abs?rev=1708041860&do=diff Description Computes the absolute value of a number. Parameters x: the number Returns x: if x is greater than or equal to 0. -x: if x is less than 0. Warning Because of the way the abs() function is implemented, avoid using other functions inside the brackets, it may lead to incorrect results. text/html 2024-02-16T01:04:21+02:00 https://code-reference.com/arduino/math/constrain?rev=1708041861&do=diff Description Constrains a number to be within a range. Parameters x: the number to constrain, all data types a: the lower end of the range, all data types b: the upper end of the range, all data types Returns x: if x is between a and b a: if x is less than a text/html 2024-02-16T01:04:20+02:00 https://code-reference.com/arduino/math/map?rev=1708041860&do=diff Description Re-maps a number from one range to another. That is, a value of fromLow would get mapped to toLow, a value of fromHigh to toHigh, values in-between to values in-between, etc. Does not constrain values to within the range, because out-of-range values are sometimes intended and useful. The constrain() function may be used either before or after this function, if limits to the ranges are desired. text/html 2024-02-16T01:04:21+02:00 https://code-reference.com/arduino/math/max?rev=1708041861&do=diff Description Calculates the maximum of two numbers. Parameters x: the first number, any data type y: the second number, any data type Returns The larger of the two parameter values. Example sensVal = max(senVal, 20); // assigns sensVal to the larger of sensVal or 20 // (effectively ensuring that it is at least 20) text/html 2024-02-16T01:04:20+02:00 https://code-reference.com/arduino/math/min?rev=1708041860&do=diff Description Calculates the minimum of two numbers. Parameters x: the first number, any data type y: the second number, any data type Returns The smaller of the two numbers. Examples sensVal = min(sensVal, 100); // assigns sensVal to the smaller of sensVal or 100 // ensuring that it never gets above 100. text/html 2024-02-16T01:04:21+02:00 https://code-reference.com/arduino/math/pow?rev=1708041861&do=diff Description Calculates the value of a number raised to a power. Pow() can be used to raise a number to a fractional power. This is useful for generating exponential mapping of values or curves. Parameters base: the number (float) exponent: the power to which the base is raised (float) text/html 2024-02-16T01:04:20+02:00 https://code-reference.com/arduino/math/sqrt?rev=1708041860&do=diff Description Calculates the square root of a number. Parameters x: the number, any data type Returns double, the number's square root. See also * pow(base, exponent) * sq Source: arduino.cc