diff --git a/c/math/cmplx/complex.go b/c/math/cmplx/complex.go
index c24a276e..bae82a19 100644
--- a/c/math/cmplx/complex.go
+++ b/c/math/cmplx/complex.go
@@ -87,3 +87,65 @@ func Tan(z complex128) complex128
 func Tanh(z complex128) complex128
 
 // -----------------------------------------------------------------------------
+
+//go:linkname Absf C.cabsf
+func Absf(z complex64) float32
+
+//go:linkname Acosf C.cacosf
+func Acosf(z complex64) complex64
+
+//go:linkname Acoshf C.cacoshf
+func Acoshf(z complex64) complex64
+
+//go:linkname Asinf C.casinf
+func Asinf(z complex64) complex64
+
+//go:linkname Asinhf C.casinhf
+func Asinhf(z complex64) complex64
+
+//go:linkname Atanf C.catanf
+func Atanf(z complex64) complex64
+
+//go:linkname Atanhf C.catanhf
+func Atanhf(z complex64) complex64
+
+//go:linkname Cosf C.ccosf
+func Cosf(z complex64) complex64
+
+//go:linkname Coshf C.ccoshf
+func Coshf(z complex64) complex64
+
+//go:linkname Expf C.cexpf
+func Expf(z complex64) complex64
+
+//go:linkname Logf C.clogf
+func Logf(z complex64) complex64
+
+//go:linkname Log10f C.clog10f
+func Log10f(z complex64) complex64
+
+//go:linkname Argf C.cargf
+func Argf(z complex64) float32
+
+//go:linkname Phasef C.cargf
+func Phasef(z complex64) float32
+
+//go:linkname Powf C.cpowf
+func Powf(x, y complex64) complex64
+
+//go:linkname Sinf C.csinf
+func Sinf(z complex64) complex64
+
+//go:linkname Sinhf C.csinhf
+func Sinhf(z complex64) complex64
+
+//go:linkname Sqrtf C.csqrtf
+func Sqrtf(z complex64) complex64
+
+//go:linkname Tanf C.ctanf
+func Tanf(z complex64) complex64
+
+//go:linkname Tanhf C.ctanhf
+func Tanhf(z complex64) complex64
+
+// -----------------------------------------------------------------------------
diff --git a/cl/_testlibc/complex/in.go b/cl/_testlibc/complex/in.go
new file mode 100644
index 00000000..f40cb43e
--- /dev/null
+++ b/cl/_testlibc/complex/in.go
@@ -0,0 +1,12 @@
+package main
+
+import (
+	"github.com/goplus/llgo/c/math/cmplx"
+)
+
+func main() {
+	re := float32(3.0)
+	im := float32(4.0)
+	c := complex(re, im)
+	println("abs(3+4i):", cmplx.Absf(c))
+}
diff --git a/cl/_testlibc/complex/out.ll b/cl/_testlibc/complex/out.ll
new file mode 100644
index 00000000..45bbb198
--- /dev/null
+++ b/cl/_testlibc/complex/out.ll
@@ -0,0 +1,59 @@
+; ModuleID = 'main'
+source_filename = "main"
+
+%"github.com/goplus/llgo/internal/runtime.String" = type { ptr, i64 }
+
+@"main.init$guard" = global i1 false, align 1
+@__llgo_argc = global i32 0, align 4
+@__llgo_argv = global ptr null, align 8
+@0 = private unnamed_addr constant [10 x i8] c"abs(3+4i):", align 1
+
+define void @main.init() {
+_llgo_0:
+  %0 = load i1, ptr @"main.init$guard", align 1
+  br i1 %0, label %_llgo_2, label %_llgo_1
+
+_llgo_1:                                          ; preds = %_llgo_0
+  store i1 true, ptr @"main.init$guard", align 1
+  br label %_llgo_2
+
+_llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
+  ret void
+}
+
+define i32 @main(i32 %0, ptr %1) {
+_llgo_0:
+  store i32 %0, ptr @__llgo_argc, align 4
+  store ptr %1, ptr @__llgo_argv, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.init"()
+  call void @main.init()
+  %2 = alloca { float, float }, align 8
+  %3 = getelementptr inbounds { float, float }, ptr %2, i32 0, i32 0
+  store float 3.000000e+00, ptr %3, align 4
+  %4 = getelementptr inbounds { float, float }, ptr %2, i32 0, i32 1
+  store float 4.000000e+00, ptr %4, align 4
+  %5 = load { float, float }, ptr %2, align 4
+  %6 = call float @cabsf({ float, float } %5)
+  %7 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %8 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %7, i32 0, i32 0
+  store ptr @0, ptr %8, align 8
+  %9 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %7, i32 0, i32 1
+  store i64 10, ptr %9, align 4
+  %10 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %7, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %10)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
+  %11 = fpext float %6 to double
+  call void @"github.com/goplus/llgo/internal/runtime.PrintFloat"(double %11)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
+  ret i32 0
+}
+
+declare void @"github.com/goplus/llgo/internal/runtime.init"()
+
+declare float @cabsf({ float, float })
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String")
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8)
+
+declare void @"github.com/goplus/llgo/internal/runtime.PrintFloat"(double)
diff --git a/cl/_testlibgo/complex/in.go b/cl/_testlibgo/complex/in.go
index 7610e171..5350a241 100644
--- a/cl/_testlibgo/complex/in.go
+++ b/cl/_testlibgo/complex/in.go
@@ -5,5 +5,8 @@ import (
 )
 
 func main() {
-	println("abs(3+4i):", cmplx.Abs(3+4i))
+	re := 3.0
+	im := 4.0
+	c := complex(re, im)
+	println("abs(3+4i):", cmplx.Abs(c))
 }
diff --git a/cl/_testlibgo/complex/out.ll b/cl/_testlibgo/complex/out.ll
index abd63e4e..15a7c871 100644
--- a/cl/_testlibgo/complex/out.ll
+++ b/cl/_testlibgo/complex/out.ll
@@ -28,16 +28,22 @@ _llgo_0:
   store ptr %1, ptr @__llgo_argv, align 8
   call void @"github.com/goplus/llgo/internal/runtime.init"()
   call void @main.init()
-  %2 = call double @"math/cmplx.Abs"({ double, double } { double 3.000000e+00, double 4.000000e+00 })
-  %3 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
-  %4 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %3, i32 0, i32 0
-  store ptr @0, ptr %4, align 8
-  %5 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %3, i32 0, i32 1
-  store i64 10, ptr %5, align 4
-  %6 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %3, align 8
-  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %6)
+  %2 = alloca { double, double }, align 8
+  %3 = getelementptr inbounds { double, double }, ptr %2, i32 0, i32 0
+  store double 3.000000e+00, ptr %3, align 8
+  %4 = getelementptr inbounds { double, double }, ptr %2, i32 0, i32 1
+  store double 4.000000e+00, ptr %4, align 8
+  %5 = load { double, double }, ptr %2, align 8
+  %6 = call double @"math/cmplx.Abs"({ double, double } %5)
+  %7 = alloca %"github.com/goplus/llgo/internal/runtime.String", align 8
+  %8 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %7, i32 0, i32 0
+  store ptr @0, ptr %8, align 8
+  %9 = getelementptr inbounds %"github.com/goplus/llgo/internal/runtime.String", ptr %7, i32 0, i32 1
+  store i64 10, ptr %9, align 4
+  %10 = load %"github.com/goplus/llgo/internal/runtime.String", ptr %7, align 8
+  call void @"github.com/goplus/llgo/internal/runtime.PrintString"(%"github.com/goplus/llgo/internal/runtime.String" %10)
   call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 32)
-  call void @"github.com/goplus/llgo/internal/runtime.PrintFloat"(double %2)
+  call void @"github.com/goplus/llgo/internal/runtime.PrintFloat"(double %6)
   call void @"github.com/goplus/llgo/internal/runtime.PrintByte"(i8 10)
   ret i32 0
 }