diff options
Diffstat (limited to 'include/fpu/softfloat-types.h')
| -rw-r--r-- | include/fpu/softfloat-types.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h index bba1c397bb..53d5eb8521 100644 --- a/include/fpu/softfloat-types.h +++ b/include/fpu/softfloat-types.h @@ -305,6 +305,22 @@ typedef enum __attribute__((__packed__)) { } FloatInfZeroNaNRule; /* + * When flush_to_zero is set, should we detect denormal results to + * be flushed before or after rounding? For most architectures this + * should be set to match the tininess_before_rounding setting, + * but a few architectures, e.g. MIPS MSA, detect FTZ before + * rounding but tininess after rounding. + * + * This enum is arranged so that the default if the target doesn't + * configure it matches the default for tininess_before_rounding + * (i.e. "after rounding"). + */ +typedef enum __attribute__((__packed__)) { + float_ftz_after_rounding = 0, + float_ftz_before_rounding = 1, +} FloatFTZDetection; + +/* * Floating Point Status. Individual architectures may maintain * several versions of float_status for different functions. The * correct status for the operation is then passed by reference to @@ -321,6 +337,8 @@ typedef struct float_status { bool tininess_before_rounding; /* should denormalised results go to zero and set output_denormal_flushed? */ bool flush_to_zero; + /* do we detect and flush denormal results before or after rounding? */ + FloatFTZDetection ftz_detection; /* should denormalised inputs go to zero and set input_denormal_flushed? */ bool flush_inputs_to_zero; bool default_nan_mode; |