contrib/gcc/config/fixdfdi.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

/* Public domain.  */
typedef unsigned int USItype __attribute__ ((mode (SI)));
typedef int DItype __attribute__ ((mode (DI)));
typedef unsigned int UDItype __attribute__ ((mode (DI)));
typedef float DFtype __attribute__ ((mode (DF)));

DItype __fixdfdi (DFtype);

/* This version is needed to prevent recursion; fixunsdfdi in libgcc
   calls fixdfdi, which in turn calls calls fixunsdfdi.  */

static DItype
local_fixunsdfdi (DFtype a)
{
  USItype hi, lo;

  hi = a / (((UDItype) 1) << (sizeof (USItype) * 8));
  lo = a - ((DFtype) hi) * (((UDItype) 1) << (sizeof (USItype) * 8));
  return ((UDItype) hi << (sizeof (USItype) * 8)) | lo;
}

DItype
__fixdfdi (DFtype a)
{
  if (a < 0)
    return - local_fixunsdfdi (-a);
  return local_fixunsdfdi (a);
}