diff options
Diffstat (limited to 'sysdeps/aarch64/fpu/cos_sve.c')
| -rw-r--r-- | sysdeps/aarch64/fpu/cos_sve.c | 53 |
1 files changed, 26 insertions, 27 deletions
diff --git a/sysdeps/aarch64/fpu/cos_sve.c b/sysdeps/aarch64/fpu/cos_sve.c index d7a9b134da..c804e52fc6 100644 --- a/sysdeps/aarch64/fpu/cos_sve.c +++ b/sysdeps/aarch64/fpu/cos_sve.c @@ -37,9 +37,9 @@ static const struct data #define RangeVal 0x4160000000000000 /* asuint64 (0x1p23). */ static svfloat64_t NOINLINE -special_case (svfloat64_t x, svfloat64_t y, svbool_t out_of_bounds) +special_case (svfloat64_t x, svfloat64_t y, svbool_t oob) { - return sv_call_f64 (cos, x, y, out_of_bounds); + return sv_call_f64 (cos, x, y, oob); } /* A fast SVE implementation of cos based on trigonometric @@ -51,42 +51,41 @@ svfloat64_t SV_NAME_D1 (cos) (svfloat64_t x, const svbool_t pg) { const struct data *d = ptr_barrier (&data); - svfloat64_t r = svabs_f64_x (pg, x); - svbool_t out_of_bounds - = svcmpge_n_u64 (pg, svreinterpret_u64_f64 (r), RangeVal); + svfloat64_t r = svabs_x (pg, x); + svbool_t oob = svcmpge (pg, svreinterpret_u64 (r), RangeVal); /* Load some constants in quad-word chunks to minimise memory access. */ svbool_t ptrue = svptrue_b64 (); - svfloat64_t invpio2_and_pio2_1 = svld1rq_f64 (ptrue, &d->inv_pio2); - svfloat64_t pio2_23 = svld1rq_f64 (ptrue, &d->pio2_2); + svfloat64_t invpio2_and_pio2_1 = svld1rq (ptrue, &d->inv_pio2); + svfloat64_t pio2_23 = svld1rq (ptrue, &d->pio2_2); /* n = rint(|x|/(pi/2)). */ - svfloat64_t q = svmla_lane_f64 (sv_f64 (d->shift), r, invpio2_and_pio2_1, 0); - svfloat64_t n = svsub_n_f64_x (pg, q, d->shift); + svfloat64_t q = svmla_lane (sv_f64 (d->shift), r, invpio2_and_pio2_1, 0); + svfloat64_t n = svsub_x (pg, q, d->shift); /* r = |x| - n*(pi/2) (range reduction into -pi/4 .. pi/4). */ - r = svmls_lane_f64 (r, n, invpio2_and_pio2_1, 1); - r = svmls_lane_f64 (r, n, pio2_23, 0); - r = svmls_lane_f64 (r, n, pio2_23, 1); + r = svmls_lane (r, n, invpio2_and_pio2_1, 1); + r = svmls_lane (r, n, pio2_23, 0); + r = svmls_lane (r, n, pio2_23, 1); /* cos(r) poly approx. */ - svfloat64_t r2 = svtsmul_f64 (r, svreinterpret_u64_f64 (q)); + svfloat64_t r2 = svtsmul (r, svreinterpret_u64 (q)); svfloat64_t y = sv_f64 (0.0); - y = svtmad_f64 (y, r2, 7); - y = svtmad_f64 (y, r2, 6); - y = svtmad_f64 (y, r2, 5); - y = svtmad_f64 (y, r2, 4); - y = svtmad_f64 (y, r2, 3); - y = svtmad_f64 (y, r2, 2); - y = svtmad_f64 (y, r2, 1); - y = svtmad_f64 (y, r2, 0); + y = svtmad (y, r2, 7); + y = svtmad (y, r2, 6); + y = svtmad (y, r2, 5); + y = svtmad (y, r2, 4); + y = svtmad (y, r2, 3); + y = svtmad (y, r2, 2); + y = svtmad (y, r2, 1); + y = svtmad (y, r2, 0); /* Final multiplicative factor: 1.0 or x depending on bit #0 of q. */ - svfloat64_t f = svtssel_f64 (r, svreinterpret_u64_f64 (q)); - /* Apply factor. */ - y = svmul_f64_x (pg, f, y); + svfloat64_t f = svtssel (r, svreinterpret_u64 (q)); + + if (__glibc_unlikely (svptest_any (pg, oob))) + return special_case (x, svmul_x (svnot_z (pg, oob), y, f), oob); - if (__glibc_unlikely (svptest_any (pg, out_of_bounds))) - return special_case (x, y, out_of_bounds); - return y; + /* Apply factor. */ + return svmul_x (pg, f, y); } |