about summary refs log tree commit diff
path: root/src/math/riscv32/copysign.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/math/riscv32/copysign.c')
-rw-r--r--src/math/riscv32/copysign.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/math/riscv32/copysign.c b/src/math/riscv32/copysign.c
new file mode 100644
index 00000000..c7854178
--- /dev/null
+++ b/src/math/riscv32/copysign.c
@@ -0,0 +1,15 @@
+#include <math.h>
+
+#if __riscv_flen >= 64
+
+double copysign(double x, double y)
+{
+	__asm__ ("fsgnj.d %0, %1, %2" : "=f"(x) : "f"(x), "f"(y));
+	return x;
+}
+
+#else
+
+#include "../copysign.c"
+
+#endif