From 2cdc462f3a6033ba254ec8ca606c34054e2eb08d Mon Sep 17 00:00:00 2001
From: anutosh491 <andersonbhat491@gmail.com>
Date: Mon, 9 Oct 2023 14:53:14 +0530
Subject: [PATCH] Implemented isnan through emulation

---
 include/xsimd/arch/xsimd_wasm.hpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/xsimd/arch/xsimd_wasm.hpp b/include/xsimd/arch/xsimd_wasm.hpp
index 73369bc89..59110f85a 100644
--- a/include/xsimd/arch/xsimd_wasm.hpp
+++ b/include/xsimd/arch/xsimd_wasm.hpp
@@ -385,6 +385,18 @@ namespace xsimd
             return wasm_f64x2_gt(self, other);
         }
 
+        // isnan
+        template <class A>
+        inline batch_bool<float, A> isnan(batch<float, A> const& self, requires_arch<wasm>) noexcept
+        {
+            return wasm_v128_or(wasm_f32x4_ne(self, self), wasm_f32x4_ne(self, self));
+        }
+        template <class A>
+        inline batch_bool<double, A> isnan(batch<double, A> const& self, requires_arch<wasm>) noexcept
+        {
+            return wasm_v128_or(wasm_f64x2_ne(self, self), wasm_f64x2_ne(self, self));
+        }
+
         // le
         template <class A>
         inline batch_bool<float, A> le(batch<float, A> const& self, batch<float, A> const& other, requires_arch<wasm>) noexcept