mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-25 14:34:29 +00:00
19 lines
486 B
C
19 lines
486 B
C
/* Public domain. */
|
|
typedef int SItype __attribute__ ((mode (SI)));
|
|
typedef unsigned int USItype __attribute__ ((mode (SI)));
|
|
typedef float SFtype __attribute__ ((mode (SF)));
|
|
|
|
SFtype
|
|
__floatunsisf (USItype u)
|
|
{
|
|
SItype s = (SItype) u;
|
|
if (s < 0)
|
|
{
|
|
/* As in expand_float, compute (u & 1) | (u >> 1) to ensure
|
|
correct rounding if a nonzero bit is shifted out. */
|
|
return (SFtype) 2.0 * (SFtype) (SItype) ((u & 1) | (u >> 1));
|
|
}
|
|
else
|
|
return (SFtype) s;
|
|
}
|