optional arm feature complex

qbisi · qbisi · commit e7be9e4118a4 · 2025-09-15T18:29:18.000+08:00
diff --git a/libsrc/core/simd_arm64.hpp b/libsrc/core/simd_arm64.hpp
@@ -214,6 +214,7 @@ namespace ngcore
     return FNMA(SIMD<double,2> (a), b, c);
   }
 
+#ifdef __ARM_FEATURE_COMPLEX
   // ARM complex mult:
   // https://arxiv.org/pdf/1901.07294.pdf
   // c += a*b    (a0re, a0im, a1re, a1im, ...), 
@@ -231,7 +232,7 @@ namespace ngcore
     FMAComplex (a.Hi(), b.Hi(), chi);
     c = SIMD<double,4> (clo, chi);
   }
-
+#endif
   
 
   NETGEN_INLINE SIMD<double,2> operator+ (SIMD<double,2> a, SIMD<double,2> b)

Original file line number	Diff line number	Diff line change
`@@ -214,6 +214,7 @@ namespace ngcore`
`214`	`214`	`return FNMA(SIMD<double,2> (a), b, c);`
`215`	`215`	`}`
`216`	`216`
	`217`	`+#ifdef __ARM_FEATURE_COMPLEX`
`217`	`218`	`// ARM complex mult:`
`218`	`219`	`// https://arxiv.org/pdf/1901.07294.pdf`
`219`	`220`	`// c += a*b (a0re, a0im, a1re, a1im, ...),`
`@@ -231,7 +232,7 @@ namespace ngcore`
`231`	`232`	`FMAComplex (a.Hi(), b.Hi(), chi);`
`232`	`233`	`c = SIMD<double,4> (clo, chi);`
`233`	`234`	`}`
`234`		`-`
	`235`	`+#endif`
`235`	`236`
`236`	`237`
`237`	`238`	`NETGEN_INLINE SIMD<double,2> operator+ (SIMD<double,2> a, SIMD<double,2> b)`