diff options
| author | Joe Ramsay <Joe.Ramsay@arm.com> | 2024-11-01 15:48:54 +0000 |
|---|---|---|
| committer | Wilco Dijkstra <wilco.dijkstra@arm.com> | 2024-11-01 16:10:41 +0000 |
| commit | 2d82d781a539ce8e82178fc1fa2c99ae1884e7fe (patch) | |
| tree | f12a3d4fae269805d922457e80a46873cfd60ee2 /sysdeps/aarch64/fpu/erfc_data.c | |
| parent | 6d477b8de8c3a84a061a78c05e5300143b297850 (diff) | |
| download | glibc-2d82d781a539ce8e82178fc1fa2c99ae1884e7fe.tar.xz glibc-2d82d781a539ce8e82178fc1fa2c99ae1884e7fe.zip | |
AArch64: Remove SVE erf and erfc tables
By using a combination of mask-and-add instead of the shift-based
index calculation the routines can share the same table as other
variants with no performance degradation.
The tables change name because of other changes in downstream AOR.
Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Diffstat (limited to 'sysdeps/aarch64/fpu/erfc_data.c')
| -rw-r--r-- | sysdeps/aarch64/fpu/erfc_data.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/aarch64/fpu/erfc_data.c b/sysdeps/aarch64/fpu/erfc_data.c index 76a94e4681..8dc6a8c42c 100644 --- a/sysdeps/aarch64/fpu/erfc_data.c +++ b/sysdeps/aarch64/fpu/erfc_data.c @@ -19,14 +19,14 @@ #include "vecmath_config.h" -/* Lookup table used in erfc. +/* Lookup table used in vector erfc. For each possible rounded input r (multiples of 1/128), between r = 0.0 and r = ~27.0 (3488 values): - - the first entry __erfc_data.tab.erfc contains the values of erfc(r), - - the second entry __erfc_data.tab.scale contains the values of + - the first entry __v_erfc_data.tab.erfc contains the values of erfc(r), + - the second entry __v_erfc_data.tab.scale contains the values of 2/sqrt(pi)*exp(-r^2). Both values may go into subnormal range, therefore they are scaled by a large enough value 2^128 (fits in 8bit). */ -const struct erfc_data __erfc_data = { +const struct v_erfc_data __v_erfc_data = { .tab = { { 0x1p128, 0x1.20dd750429b6dp128 }, { 0x1.fb7c9030853b3p127, 0x1.20d8f1975c85dp128 }, { 0x1.f6f9447be0743p127, 0x1.20cb67bd452c7p128 }, |