gwj / at91sam9263 · Commits

Commit 80621676af6893b84dec1c5d00e0f5b928253ef9

Authored by aurel32
1 parent 0ca9d380

Math functions helper for CONFIG_SOFTFLOAT=yes 

The patch below adds isfinite() and isnormal() functions which can
work with float64 type, used when CONFIG_SOFTFLOAT=yes.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4048 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 21 additions and 0 deletions
target-ppc/op_helper.c
  View file @8062167
... ... @@ -492,6 +492,27 @@ static always_inline int isinfinity (float64 d)
492 492 (u.ll & 0x000FFFFFFFFFFFFFULL) == 0;
493 493 }
494 494  
  495 +#ifdef CONFIG_SOFTFLOAT
  496 +static always_inline int isfinite (float64 d)
  497 +{
  498 + CPU_DoubleU u;
  499 +
  500 + u.d = d;
  501 +
  502 + return (((u.ll >> 52) & 0x7FF) != 0x7FF);
  503 +}
  504 +
  505 +static always_inline int isnormal (float64 d)
  506 +{
  507 + CPU_DoubleU u;
  508 +
  509 + u.d = d;
  510 +
  511 + uint32_t exp = (u.ll >> 52) & 0x7FF;
  512 + return ((0 < exp) && (exp < 0x7FF));
  513 +}
  514 +#endif
  515 +
495 516 void do_compute_fprf (int set_fprf)
496 517 {
497 518 int isneg;
... ...