14 void cl_DF_to_double (const cl_DF& obj, dfloatjanus* val_)
16 var dfloat val = TheDfloat(obj)->dfloat_value;
17 // Der Exponent muß um DF_exp_mid-1022 erniedrigt werden.
19 #if (cl_word_size==64)
20 { var uintL exp = (val >> DF_mant_len) & (bit(DF_exp_len)-1); // e
21 if (exp < DF_exp_mid-1022+1)
22 { // produziere denormalisiertes Float
23 val = (val & minus_bit(DF_exp_len+DF_mant_len)) // selbes Vorzeichen
24 | ((sint64)0 << DF_mant_len) // Exponent 0
25 | (((val & (bit(DF_mant_len)-1)) | bit(DF_mant_len)) // Mantisse shiften
26 >> (DF_exp_mid-1022+1 - exp) // shiften
30 { val -= (sint64)(DF_exp_mid - 1022) << DF_mant_len; }
33 { var uintL exp = (val.semhi >> (DF_mant_len-32)) & (bit(DF_exp_len)-1); // e
34 if (exp < DF_exp_mid-1022+1)
35 { // produziere denormalisiertes Float
36 var uintL shiftcount = DF_exp_mid-1022+1 - exp;
37 val.mlo = val.mlo >> shiftcount; // Mantisse shiften
38 val.mlo |= val.semhi << (32-shiftcount);
39 val.semhi = (val.semhi & minus_bit(DF_exp_len+DF_mant_len-32)) // selbes Vorzeichen
40 | ((sint32)0 << (DF_mant_len-32)) // Exponent 0
41 | (((val.semhi & (bit(DF_mant_len-32)-1)) | bit(DF_mant_len-32)) // Mantisse shiften
42 >> shiftcount // shiften
46 { val.semhi -= (sint32)(DF_exp_mid - 1022) << (DF_mant_len-32); }
49 val_->eksplicit = val;