functions in std.i - m

             mac_primitives, file  
 
     sets FILE primitive data types to be native to MacIntosh, 8 byte double.  
interpreted function, defined at i0/std.i   line 2144  

             macl_primitives, file  
 
     sets FILE primitive data types to be native to MacIntosh, long double.  
interpreted function, defined at i0/std.i   line 2152  

             max(x)  
          or max(x, y, z, ...)  
 
     returns the scalar maximum value of its array argument, or, if  
     more than one argument is supplied, returns an array of the  
     maximum value for each array element among the several arguments.  
     In the multi-argument case, the arguments must be conformable.  
builtin function, documented at i0/std.i   line 764  

             median(x)  
          or median(x, which)  
 
     returns the median of the array X.  The search for the median takes  
     place along the dimension of X specified by WHICH.  WHICH defaults  
     to 1, meaning the first index of X.  The median function returns an  
     array with one fewer dimension than its argument X (the WHICH  
     dimension of X is missing in the result), in exact analogy with  
     rank reducing index range functions.  If dimsof(X)(WHICH) is  
     odd, the result will have the same data type as X; if even, the  
     result will be a float or a double, since the median is defined  
     as the arithmetic mean between the two central values in that  
     case.  
interpreted function, defined at i0/std.i   line 1152  

             merge(true_expr, false_expr, condition)  
 
     returns the values TRUE_EXPR or FALSE_EXPR where CONDITION is  
     non-zero or zero, respectively.  The result has the data type of  
     TRUE_EXPR or FALSE_EXPR, promoted to the higher arithmetic type  
     if necessary.  The result has the dimensions of CONDITION.  
     The number of elements in TRUE_EXPR must match the number of  
     non-zero elements of CONDITION, and the number of elements in  
     FALSE_EXPR must match the number of zero elements of CONDITION.  
     (TRUE_EXPR or FALSE_EXPR should be nil if there are no such  
     elements of CONDITION.  Normally, TRUE_EXPR and FALSE_EXPR should  
     be 1-D arrays if they are not nil.)  
     This function is intended for vectorizing a function whose  
     domain is divided into two or more parts, as in:  
        func f(x) {  
          big= (x>=threshhold);  
          wb= where(big);  
          ws= where(!big);  
          if (is_array(wb)) {  
            xx= x(wb);  
            fb=   
          }  
          if (is_array(ws)) {  
            xx= x(ws);  
            fs=   
          }  
          return merge(fb, fs, big);  
        }  
builtin function, documented at i0/std.i   line 846  

             merge2(true_expr, false_expr, condition)  
 
     returns the values TRUE_EXPR or FALSE_EXPR where CONDITION is  
     non-zero or zero, respectively.  The result has the data type of  
     TRUE_EXPR or FALSE_EXPR, promoted to the higher arithmetic type  
     if necessary.  Unlike the merge function, TRUE_EXPR and FALSE_EXPR  
     must be conformable with each other, and with the CONDITION.  
interpreted function, defined at i0/std.i   line 877  

             y = mergef(x, f1, cond1, f2, cond2, ... felse)  
 
    Evaluate F1(X(where(COND1))), F2(X(where(COND2))),  
    and so on, until FELSE(X(where(!(COND1 | COND2 | ...))))  
    and merge all the results back into an array Y with the  
    same dimensions as X.  Each of the CONDi must have the  
    same dimensions as X, and they must be mutally exclusive.  
    
    During the evaluation of Fi, note that all of the local  
    variables of the caller of mergef are available.  The  
    Fi are invoked as Fi(X(mergel)) and  the variable mergel  
    = where(CONDi) is available to the Fi, in case they need  
    to extract any additional parameters.  If noneof(CONDi)  
    then Fi will not be called at all, otherwise, the Fi are  
    invoked in order.  The return value of Fi must have the same  
    shape as its argument (which will be a 1D array or scalar).  
    
    Use mergeg to construct secondary results the same shape  
    as X and Y.  
    
interpreted function, defined at i0/std.i   line 899  

             z = mergeg(z, value)  
         or z = mergeg(z)  
 
    If secondary results are to be returned from a mergef, besides  
    its return value, the Fi may construct them using the second  
    form of mergef:  
      z = mergeg(z, value)  
    where z is a variable in the original caller of mergef,  
    and value is its value where(CONDi).  Note that the variable  
    name of the first parameter must be the same as the variable  
    name it is assigned to in this construction -- that variable  
    is being used to hold the state of z as it is built.  After  
    the outer mergef returns, the caller needs to invoke  
      z = mergeg(z)  
    one final time to complete each secondary return value.  
    
    z = [];  
    y = mergef(x, f1, cond, f2);  
    z = mergeg(z);  
    ...  
    func f1(x) {   
      z = mergeg(z, exprz(x));  
      return expry(x);  
    }  
    func f2(x) {   
      z = mergeg(z, exprz(x));  
      return expry(x);  
    }  
    
interpreted function, defined at i0/std.i   line 945  

             min(x)  
          or min(x, y, z, ...)  
 
     returns the scalar minimum value of its array argument, or, if  
     more than one argument is supplied, returns an array of the  
     minimum value for each array element among the several arguments.  
     In the multi-argument case, the arguments must be conformable.  
builtin function, documented at i0/std.i   line 754  

             mkdir, directory_name  
             rmdir, directory_name  
 
     Create DIRECTORY_NAME with mkdir, or remove it with rmdir.  
     The rmdir function only works if the directory is empty.  
builtin function, documented at i0/std.i   line 1703