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Annotation of 43BSD/contrib/icon/functions/real.c, revision 1.1.1.1

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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