41 #define DO_USE_LOGTAB__TABLE ( logtab->size == 4096 && LOG_SCALE == 1024)
45 void create_lookup_log(log_table_info *logtab, int num_bits)  in create_lookup_log()  argument
50   ASSERT(logtab);  in create_lookup_log()
52   logtab->size = 0x01 << num_bits;  in create_lookup_log()
53   logtab->mask = 0x01;  in create_lookup_log()
56     logtab->mask = (logtab->mask << 1) | 0x01;  in create_lookup_log()
57   logtab->mask = ~logtab->mask;  in create_lookup_log()
59   logtab->scale = LOG_SCALE;  in create_lookup_log()
61   logtab->shift = (int)(val + 0.5);  in create_lookup_log()
63 	logtab->table = logtab__table;  in create_lookup_log()
65     int* table = (int *) CALLOC(logtab->size + 1, sizeof(int), "cfront.logtable");  in create_lookup_log()
66     logtab->table = table;  in create_lookup_log()
67 	PRINT_SOME_CODE("#define DO_USE_LOGTAB__TABLE ( (logtab->size == %d) \\\n", logtab->size);  in create_lookup_log()
69 	PRINT_SOME_CODE("int logtab__table[%d] = { 0, ", logtab->size); /* filler for pos 0 */  in create_lookup_log()
70 	for (ii = 1; ii <= logtab->size; ii++)  in create_lookup_log()
84 int log_lookup(log_table_info *logtab, int operand, int shift)  in log_lookup()  argument
88   ASSERT(logtab);  in log_lookup()
91   while ((operand & logtab->mask))  in log_lookup()
96   if (operand >= logtab->size)  in log_lookup()
103              (int)((shift) *(logtab->shift) + logtab->table[operand]));  in log_lookup()
105   return ((int)((shift) *(logtab->shift) + logtab->table[operand]));  in log_lookup()
108 void destroy_lookup_log(log_table_info *logtab)  in destroy_lookup_log()  argument
110   ASSERT(logtab);  in destroy_lookup_log()
111   ASSERT(logtab->table);  in destroy_lookup_log()
113 	  FREE((char *)logtab->table);  in destroy_lookup_log()