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-rw-r--r--src/gallium/docs/source/tgsi.rst6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 13daa62ab62..4d26c465579 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -94,16 +94,16 @@ This instruction replicates its result.
.. opcode:: RSQ - Reciprocal Square Root
-This instruction replicates its result.
+This instruction replicates its result. The results are undefined for src <= 0.
.. math::
- dst = \frac{1}{\sqrt{|src.x|}}
+ dst = \frac{1}{\sqrt{src.x}}
.. opcode:: SQRT - Square Root
-This instruction replicates its result.
+This instruction replicates its result. The results are undefined for src < 0.
.. math::