1998-10-13 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>
+ * real.c (emdnorm and etoasc): Disable round to even for c4x target
+ to be compatible with TI compiler.
+
* Makefile.in (USER_H): Add va-c4x.h to definition.
Tue Oct 13 23:03:37 1998 Richard Henderson <rth@cygnus.com>
`C4X' refers specifically to the floating point format used on
Texas Instruments TMS320C3x and TMS320C4x digital signal
processors. This supports QFmode (32-bit float, double) and HFmode
- (40-bit long double) where BITS_PER_BYTE is 32.
+ (40-bit long double) where BITS_PER_BYTE is 32. Unlike IEEE
+ floats, C4x floats are not rounded to be even. The C4x conversions
+ were contributed by m.hayes@elec.canterbury.ac.nz (Michael Hayes) and
+ Haj.Ten.Brugge@net.HCC.nl (Herman ten Brugge).
If LONG_DOUBLE_TYPE_SIZE = 64 (the default, unless tm.h defines it)
then `long double' and `double' are both implemented, but they
s[rw] &= ~rmsk;
if ((r & rmbit) != 0)
{
+#ifndef C4X
if (r == rmbit)
{
if (lost == 0)
goto mddone;
}
}
+#endif
eaddm (rbit, s);
}
mddone:
emovo (y, t);
if (ecmp (t, ezero) != 0)
goto roun; /* round to nearest */
+#ifndef C4X
if ((*(s - 1) & 1) == 0)
goto doexp; /* round to even */
+#endif
}
/* Round up and propagate carry-outs */
roun: