Category  Library procedure  
Format  (abs num)  
Parameters 


Description  abs computes the absolute value of num. The type of the result is the same as the argument's, with the exception of 16384, as it is not representable as an integer and therefore coerced to a float.  
R^{4}RS Compliance  Full  
Examples 

Category  Primitive procedure (MathLib required)  
Format  (acos z)  
Parameters 


Description  acos computes the arc cosine of z
in radians.
For complex arguments z = x + yi,
the formula 

R^{4}RS Compliance  Full  
Examples 

Category  Primitive procedure (MathLib required)  
Format  (acosh z)  
Parameters 


Description  acosh computes the hyperbolic arc cosine
of z.
For complex arguments z = x + yi,
the formula 

R^{4}RS Compliance  LispMe extension  
Examples 

Category  Special form  
Format  (and expr_{1} ...)  
Parameters 


Description  and evaluates the expr_{i} in left to right order. If any expression is false, the evaluation is finished. In any case, the value of the last expression evaluated is returned. Remember that '() is considered true in LispMe.  
R^{4}RS Compliance  Full  
Examples 

Category  Native procedure (MathLib required)  
Format  (angle z)  
Parameters 


Description  angle computes the angle of the number z. The angle is always in the range pi (exclusive) and pi (inclusive). See also atan.  
R^{4}RS Compliance  Full  
Examples 

Category  Primitive procedure  
Format  (append list_{i} ...)  
Parameters 


Description  append creates a list consisting of all the elements of the list_{i} in the order of the arguments. The original lists are not modified, but the last list is not copied and shares structure with the result.  
R^{4}RS Compliance  Full  
Examples 

Category  Primitive procedure  
Format  (apply procedure arglist)  
Parameters 


Description  apply calls procedure passing
each element in arglist to
procedure. The result of calling
procedure is returned. apply is especially useful when dealing with procedures with variable length argument lists, see examples.  
R^{4}RS Compliance  Full  
Examples 

Category  Primitive procedure (MathLib required)  
Format  (asin z)  
Parameters 


Description  asin computes the arc sine of z
in radians.
For complex arguments z = x + yi,
the formula 

R^{4}RS Compliance  Full  
Examples 

Category  Primitive procedure (MathLib required)  
Format  (asinh z)  
Parameters 


Description  asinh computes the hyperbolic arc sine
of z.
For complex arguments z = x + yi,
the formula 

R^{4}RS Compliance  LispMe extension  
Examples 

Category  Native procedures  
Formats 


Parameters 


Description  These procedures return the first element in alist, whose car is obj. If none is found, #f is returned. To compare obj with the keys, assoc uses equal?, assq uses eq?, and assv uses eqv?.  
R^{4}RS Compliance  Full  
Examples 

Category  Primitive procedure (MathLib required)  
Format 


Parameters 


Description  atan computes the arc tangent
of z in radians.
For complex arguments z = x + yi,
the formula With the second form, the result is an angle whose tangent is y/x, but the signs of the arguments decide which of the two angles differing by pi is returned. It's the same value as (angle (makerectangular x y)) 

R^{4}RS Compliance  Full  
Examples 

Category  Primitive procedure (MathLib required)  
Format  (atanh z)  
Parameters 


Description  atanh computes the hyperbolic arc tangent
of z.
For complex arguments z = x + yi,
the formula 

R^{4}RS Compliance  LispMe extension  
Examples 

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