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M Math.asin() (Function) Warnings: . Note that Math.acos(0) may not return the same value as Math.PI. Math object, Math.asin(), Math.atan(), Math.atan2(), Math.cos(), Math.PI, Math.sin(), Math.tan(), Trigonometric function See also: Cross-references: ECMA 262 edition 2 section 15.8.2.2 ECMA 262 edition 3 section 15.8.2.2 Math.asin() (Function) The inverse sine of the passed-in value. Availability: ECMAScript edition 2 JavaScript 1.0 JScript 1.0 Internet Explorer 3.02 Netscape 2.0 Netscape Enterprise Server version 2.0 Opera 3.0 Property/method value type: Number primitive JavaScript syntax: -Math.asin(aValue) Argument list: aValue Some meaningful numeric value This function returns the arc-sine of the argument. Special boundary conditions that affect the results are: Argument Result 0 0 greater than 1 NaN less than -1 NaN NaN NaN The exact value yielded by this function may vary slightly from implementation to implementation due to differences in the underlying precision of the implementations, math routines, and the specific algorithm selected to evaluate this function. The result of this method is the arc-sine of the passed-in value. The result is expressed in radians and ranges from -pi/2 to +pi/2. See also: Math object, Math.acos(), Math.atan(), Math.atan2(), Math.cos(), Math.sin(), Math.tan(), Trigonometric function 1397

JavaScript Programmer’s Reference { document.write(myEnum + ” ” + Math.abs(myEnum) + “
“); } See also: Integer arithmetic, Integer-value-remainder, Math object, Math.ceil(), Math.floor(), Type conversion Cross-references: ECMA 262 edition 2 section 15.8.2.1 ECMA 262 edition 3 section 15.8.2.1 Math.acos() (Function) The inverse cosine of the passed-in value. Availability: ECMAScript edition 2 JavaScript 1.0 JScript 1.0 Internet Explorer 3.02 Netscape 2.0 Netscape Enterprise Server 2.0 Opera 3.0 Property/method value type: Number primitive JavaScript syntax: -Math.acos(aValue) Argument list: aValue Some meaningful numeric value This function returns the arc-cosine of the argument. Special boundary conditions that affect the results are: Argument Result 1 0 greater than 1 NaN less than -1 NaN NaN NaN The exact value yielded by this function may vary slightly from implementation to implementation due to differences in the underlying precision of the implementations, math routines, and the specific algorithm selected to evaluate this function. The result of this method is the arc-cosine of the passed-in value. The result is expressed in radians and ranges from 0 to pi. 1396

M Math.abs() (Function) Math.abs() (Function) The absolute value of a positive or negative number. Some meaningful numeric value This function returns the absolute value of the argument. The absolute value of a number is its distance from zero. In general, the result has the same magnitude as the argument but always has a positive sign. Special boundary conditions that affect the results are: Availability: ECMAScript edition 2 JavaScript 1.0 JScript 1.0 Internet Explorer 3.02 Netscape 2.0 Netscape Enterprise Server 2.0 Opera 3.0 Property/method value type: Number primitive JavaScript syntax: -Math.abs(aValue) Argument list: aValue Argument Result 0 0 NaN NaN negative infinity positive infinity On some implementations, the absolute value of the most negative integer number may not be representable in the positive range. This is not the same as Number.MIN_VALUE and Number.MAX_VALUE. They describe the largest and smallest possible positive floating point values. Warnings: . It is possible that due to the underlying implementation of the math library, the absolute value of the most negative number may not be representable and it may yield NaN instead. Example code: