diff options
Diffstat (limited to 'fpu/softfloat-parts.c.inc')
| -rw-r--r-- | fpu/softfloat-parts.c.inc | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc index a78d61e..25bf99b 100644 --- a/fpu/softfloat-parts.c.inc +++ b/fpu/softfloat-parts.c.inc @@ -100,3 +100,36 @@ static FloatPartsN *partsN(pick_nan_muladd)(FloatPartsN *a, FloatPartsN *b, } return a; } + +/* + * Canonicalize the FloatParts structure. Determine the class, + * unbias the exponent, and normalize the fraction. + */ +static void partsN(canonicalize)(FloatPartsN *p, float_status *status, + const FloatFmt *fmt) +{ + if (unlikely(p->exp == 0)) { + if (likely(frac_eqz(p))) { + p->cls = float_class_zero; + } else if (status->flush_inputs_to_zero) { + float_raise(float_flag_input_denormal, status); + p->cls = float_class_zero; + frac_clear(p); + } else { + int shift = frac_normalize(p); + p->cls = float_class_normal; + p->exp = fmt->frac_shift - fmt->exp_bias - shift + 1; + } + } else if (likely(p->exp < fmt->exp_max) || fmt->arm_althp) { + p->cls = float_class_normal; + p->exp -= fmt->exp_bias; + frac_shl(p, fmt->frac_shift); + p->frac_hi |= DECOMPOSED_IMPLICIT_BIT; + } else if (likely(frac_eqz(p))) { + p->cls = float_class_inf; + } else { + frac_shl(p, fmt->frac_shift); + p->cls = (parts_is_snan_frac(p->frac_hi, status) + ? float_class_snan : float_class_qnan); + } +} |