From 06d70147e6480c021e493c442ae0f0d83ae366de Mon Sep 17 00:00:00 2001
From: stduhpf <stephduh@live.fr>
Date: Sun, 8 Dec 2024 19:19:19 +0100
Subject: [PATCH] Vulkan: fix NaN in tanh.comp with AMD proprietary driver on
 Windows (#10723)

* Vulkan: fix NaN in tanh.comp

* Faster NaN-free tanh
---
 ggml/src/ggml-vulkan/vulkan-shaders/tanh.comp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/ggml/src/ggml-vulkan/vulkan-shaders/tanh.comp b/ggml/src/ggml-vulkan/vulkan-shaders/tanh.comp
index 74630dc7f..495f966bd 100644
--- a/ggml/src/ggml-vulkan/vulkan-shaders/tanh.comp
+++ b/ggml/src/ggml-vulkan/vulkan-shaders/tanh.comp
@@ -16,6 +16,5 @@ void main() {
     if (i >= p.KX) {
         return;
     }
-
-    data_d[i] = D_TYPE(tanh(data_a[i]));
+    data_d[i] = D_TYPE(1. - 2. / (exp(2.*data_a[i]) + 1.));
 }