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Annotation of 43BSD/contrib/icon/operators/div.c, revision 1.1.1.1

1.1       root        1: #include "../h/rt.h"
                      2: 
                      3: /*
                      4:  * x / y - divide y into x.
                      5:  */
                      6: 
                      7: div(nargs, arg2, arg1, arg0)
                      8: int nargs;
                      9: struct descrip arg2, arg1, arg0;
                     10:    {
                     11:    register int t1, t2;
                     12:    union numeric n1, n2;
                     13: 
                     14:    SetBound;
                     15:    /*
                     16:     * x and y must be numbers.
                     17:     */
                     18:    if ((t1 = cvnum(&arg1, &n1)) == NULL)
                     19:       runerr(102, &arg1);
                     20:    if ((t2 = cvnum(&arg2, &n2)) == NULL)
                     21:       runerr(102, &arg2);
                     22: 
                     23:    if (t1 == T_LONGINT && t2 == T_LONGINT) {
                     24:       /*
                     25:        * x and y are both integers, just divide them and return the result.
                     26:        */
                     27:       if (n2.integer == 0L)
                     28:          runerr(201, &arg2);
                     29:       mkint(n1.integer / n2.integer, &arg0);
                     30:       }
                     31:    else {
                     32:       /*
                     33:        * Either x or y or both is real, convert the real values to integers,
                     34:        *  divide them, and return the result.
                     35:        */
                     36:       if (t1 == T_LONGINT)
                     37:          n1.real = n1.integer;
                     38:       if (t2 == T_LONGINT)
                     39:          n2.real = n2.integer;
                     40:       mkreal(n1.real / n2.real, &arg0);
                     41:       }
                     42:    ClearBound;
                     43:    }
                     44: 
                     45: Opblock(div,2,"/")

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