Return to div.c CVS log

Up to [CSRG BSD Unix] / 43BSD / contrib / icon / operators

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

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.