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Redundant Functions in the Clib Object

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The Clib object includes the functions from the C standard library. As a result, some of the methods in the Clib object overlap methods in JavaScript. In most cases, the newer JavaScript methods should be preferred over the older C functions. However, there are times, such as when working with string routines that expect null terminated strings, that the Clib methods make more sense and are more consistent in a section of a script.

The Clib methods list in Table 4 is paired with the equivalent methods in ECMAScript. Because Siebel eScript and the ECMAScript standard are developing and growing, the ECMAScript methods are always to be preferred over equivalent methods in the Clib object.

Table 4.  Correspondence Between Clib and ECMAScript Methods

Clib Method	Description	ECMAScript Method
abs()	Calculates absolute value	Math.abs()
acos()	Calculates the arc cosine	Math.acos()
asin()	Calculates the arc sine	Math.asin()
atan()	Calculates the arc tangent	Math.atan()
atan2()	Calculates the arc tangent of a fraction	Math.atan2()
atof()	Converts a string to a floating-point number	Automatic conversion
atoi()	Converts a string to an integer	Automatic conversion
atol()	Converts a string to a long integer	Automatic conversion
ceil()	Rounds a number up to the nearest integer	Math.ceil()
cos()	Calculates the cosine	Math.cos()
exp()	Computes the exponential function	Math.exp()
fabs()	Computes the absolute value of a floating-point number	Math.abs()
floor()	Rounds a number down to the nearest integer	Math.floor()
fmod()	Calculates the remainder	% operator, modulo
labs()	Returns the absolute value of a long	Math.abs()
log()	Calculates the natural logarithm	Math.log()
max()	Returns the largest of one or more values	Math.max()
min()	Returns the smallest of one or more values	Math.min()
pow()	Calculates x to the power of y	Math.pow()
sin()	Calculates the sine	Math.sin()
sqrt()	Calculates the square root	Math.sqrt()
strcat()	Appends one string to another	+ operator
strcmp()	Compares two strings	== operator
strcpy()	Copies a string	= operator
strlen()	Gets the length of a string	string.length
strlwr()	Converts a string to lowercase	string.toLowerCase
strtod()	Converts a string to decimal	Automatic conversion
strtol()	Converts a string to long	Automatic conversion
strupr()	Converts a string to uppercase	string.toUpperCase
tan()	Calculates the tangent	Math.tan()
tolower()	Converts a character to lowercase	string.toLowerCase
toupper()	Converts a character to uppercase	string.toUpperCase

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