add pffft

2024-11-09 14:57:18 -06:00
parent 78a00f71cc
commit a1790b8977
69 changed files with 25719 additions and 0 deletions
--- a/pffft/fmv.h
+++ b/pffft/fmv.h
@@ -0,0 +1,20 @@
+#ifndef FMV_H
+
+#if HAVE_FUNC_ATTRIBUTE_IFUNC
+#if defined(__has_attribute)
+#if __has_attribute(target_clones)
+#if defined(__x86_64)
+
+// see https://gcc.gnu.org/wiki/FunctionMultiVersioning
+#define PF_TARGET_CLONES __attribute__((target_clones("avx","sse4.2","sse3","sse2","sse","default")))
+#define HAVE_PF_TARGET_CLONES  1
+#endif
+#endif
+#endif
+#endif
+
+#ifndef PF_TARGET_CLONES
+#define PF_TARGET_CLONES
+#endif
+
+#endif