4 #include "base/cl_sysdep.h"
7 #include "float/cl_F.h"
12 #include "float/dfloat/cl_DF.h"
13 #include "float/lfloat/cl_LF.h"
14 #include "float/lfloat/cl_LF_impl.h"
15 #include "base/digitseq/cl_DS.h"
19 const cl_LF cl_DF_to_LF (const cl_DF& x, uintC len)
24 #if (cl_word_size==64)
26 DF_decode(x, { return encode_LF0(len); }, sign=,exp=(sintL),mant=);
30 DF_decode2(x, { return encode_LF0(len); }, sign=,exp=(sintL),manthi=,mantlo=);
32 // Long-Float allozieren,
33 // Mantisse mit intDsize*len-DF_mant_len-1 Nullbits auffüllen:
34 var Lfloat y = allocate_lfloat(len,exp+LF_exp_mid,sign);
35 var uintD* ptr = arrayMSDptr(TheLfloat(y)->data,len);
36 // erste k := ceiling(DF_mant_len+1,intDsize) Digits mit mant füllen:
37 var const int shiftcount = (ceiling(DF_mant_len+1,intDsize)*intDsize-(DF_mant_len+1));
38 #if (cl_word_size==64)
39 mant = mant<<shiftcount;
40 set_max64_Dptr(DF_mant_len+1,ptr,mant);
42 manthi = (manthi<<shiftcount) | (mantlo>>(32-shiftcount));
43 mantlo = mantlo<<shiftcount;
44 set_max32_Dptr(DF_mant_len+1-32,ptr,manthi);
45 set_32_Dptr(ptr mspop ceiling(DF_mant_len+1-32,intDsize),mantlo);
47 clear_loop_msp(ptr mspop ceiling(DF_mant_len+1,intDsize),len-ceiling(DF_mant_len+1,intDsize));