diff options
Diffstat (limited to 'sysdeps/powerpc/fpu/round_to_integer.h')
| -rw-r--r-- | sysdeps/powerpc/fpu/round_to_integer.h | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/sysdeps/powerpc/fpu/round_to_integer.h b/sysdeps/powerpc/fpu/round_to_integer.h index 4bbd885f18..c759483230 100644 --- a/sysdeps/powerpc/fpu/round_to_integer.h +++ b/sysdeps/powerpc/fpu/round_to_integer.h @@ -27,12 +27,18 @@ enum round_mode FLOOR, ROUND, TRUNC, - NEARBYINT + NEARBYINT, + RINT }; -static inline void +static inline fenv_t set_fenv_mode (enum round_mode mode) { + fenv_t fe = 0; + if (mode != RINT) + /* Save current FPU rounding mode and inexact state. */ + fe = fegetenv_register (); + switch (mode) { case CEIL: @@ -49,6 +55,22 @@ set_fenv_mode (enum round_mode mode) /* Disable FE_INEXACT exception */ reset_fpscr_bit (FPSCR_XE); break; + case RINT: + break; + } + return fe; +} + +static inline void +reset_fenv_mode (fenv_t fe, enum round_mode mode) +{ + switch (mode) + { + default: + __builtin_mtfsf (0xff, fe); + break; + case RINT: + break; } } @@ -64,9 +86,7 @@ round_to_integer_float (enum round_mode mode, float x) float r = x; - /* Save current FPU rounding mode and inexact state. */ - fenv_t fe = fegetenv_register (); - set_fenv_mode (mode); + fenv_t fe = set_fenv_mode (mode); if (x > 0.0) { /* IEEE 1003.1 round function. IEEE specifies "round to the nearest @@ -91,7 +111,7 @@ round_to_integer_float (enum round_mode mode, float x) r += 0x1p+23; r = -fabs (r); } - __builtin_mtfsf (0xff, fe); + reset_fenv_mode (fe, mode); return r; } @@ -109,8 +129,7 @@ round_to_integer_double (enum round_mode mode, double x) double r = x; /* Save current FPU rounding mode and inexact state. */ - fenv_t fe = fegetenv_register (); - set_fenv_mode (mode); + fenv_t fe = set_fenv_mode (mode); if (x > 0.0) { if (mode == ROUND) @@ -127,7 +146,7 @@ round_to_integer_double (enum round_mode mode, double x) r += 0x1p+52; r = -fabs (r); } - __builtin_mtfsf (0xff, fe); + reset_fenv_mode (fe, mode); return r; } |