llvm-project

Commit Graph

Author	SHA1	Message	Date
Tom Stellard	a64bad8338	Use a more accurate implementation for exp Using exp2(x * M_LOG2E_F) does not give us accurate enough results for OpenCL. If you look at the new exp implementation you'll see that it does multiply the input by M_LOG2E_F, but it still uses the original input in part of the calculation. This exp implementation was ported from the AMD builtin library and has been tested with piglit, OpenCV, and the ocl conformance tests. llvm-svn: 237229	2015-05-13 03:55:09 +00:00
Jeroen Ketema	e2a0f050d8	Add files forgotten in the previous commit llvm-svn: 210896	2014-06-13 12:33:40 +00:00

Author

SHA1

Message

Date

Tom Stellard

a64bad8338

Use a more accurate implementation for exp

Using exp2(x * M_LOG2E_F) does not give us accurate enough results for
OpenCL.  If you look at the new exp implementation you'll see that
it does multiply the input by M_LOG2E_F, but it still uses the original
input in part of the calculation.

This exp implementation was ported from the AMD builtin library
and has been tested with piglit, OpenCV, and the ocl conformance tests.

llvm-svn: 237229

2015-05-13 03:55:09 +00:00

Jeroen Ketema

e2a0f050d8

Add files forgotten in the previous commit

llvm-svn: 210896

2014-06-13 12:33:40 +00:00

2 Commits