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| 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/erff_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/erff_data.c')
| -rw-r--r-- | sysdeps/aarch64/fpu/erff_data.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/aarch64/fpu/erff_data.c b/sysdeps/aarch64/fpu/erff_data.c index 9a32940915..da38aed205 100644 --- a/sysdeps/aarch64/fpu/erff_data.c +++ b/sysdeps/aarch64/fpu/erff_data.c @@ -19,14 +19,14 @@ #include "vecmath_config.h" -/* Lookup table used in erff. +/* Lookup table used in vector erff. For each possible rounded input r (multiples of 1/128), between r = 0.0 and r = 4.0 (513 values): - - the first entry __erff_data.tab.erf contains the values of erf(r), - - the second entry __erff_data.tab.scale contains the values of + - the first entry __v_erff_data.tab.erf contains the values of erf(r), + - the second entry __v_erff_data.tab.scale contains the values of 2/sqrt(pi)*exp(-r^2). Note that indices 0 and 1 are never hit by the algorithm, since lookup is performed only for x >= 1/64-1/512. */ -const struct erff_data __erff_data = { +const struct v_erff_data __v_erff_data = { .tab = { { 0x0.000000p+0, 0x1.20dd76p+0 }, { 0x1.20dbf4p-7, 0x1.20d8f2p+0 }, { 0x1.20d770p-6, 0x1.20cb68p+0 }, |