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Annotation of 43BSD/contrib/icon/functions/real.c, revision 1.1

1.1     ! root        1: #include "../h/rt.h"
        !             2: 
        !             3: /*
        !             4:  * real(x) - convert x to real.
        !             5:  */
        !             6: 
        !             7: Xreal(nargs, arg1, arg0)
        !             8: int nargs;
        !             9: struct descrip arg1, arg0;
        !            10:    {
        !            11:    double r;
        !            12: 
        !            13:    /*
        !            14:     * If x is already a real, just return it.  Otherwise convert it and
        !            15:     *  return it, failing if the conversion is unsuccessful.
        !            16:     */
        !            17:    DeRef(arg1)
        !            18:    if (!QUAL(arg1) && TYPE(arg1) == T_REAL)
        !            19:       arg0 = arg1;
        !            20:    else if (cvreal(&arg1, &r) == T_REAL)
        !            21:       mkreal(r, &arg0);
        !            22:    else
        !            23:       fail();
        !            24:    }
        !            25: 
        !            26: Procblock(real,1)

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