github.com/ccccaoqing/test@v0.0.0-20220510085219-3985d23445c0/misc/cgo/test/issue8694.go (about)

     1  // Copyright 2014 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package cgotest
     6  
     7  /*
     8  #include <complex.h>
     9  
    10  complex float complexFloatSquared(complex float a) { return a*a; }
    11  complex double complexDoubleSquared(complex double a) { return a*a; }
    12  */
    13  import "C"
    14  
    15  import (
    16  	"runtime"
    17  	"testing"
    18  )
    19  
    20  func test8694(t *testing.T) {
    21  	if runtime.GOARCH == "arm" {
    22  		t.Skip("test8694 is disabled on ARM because 5l cannot handle thumb library.")
    23  	}
    24  	// Really just testing that this compiles, but check answer anyway.
    25  	x := complex64(2 + 3i)
    26  	x2 := x * x
    27  	cx2 := C.complexFloatSquared(x)
    28  	if cx2 != x2 {
    29  		t.Errorf("C.complexFloatSquared(%v) = %v, want %v", x, cx2, x2)
    30  	}
    31  
    32  	y := complex128(2 + 3i)
    33  	y2 := y * y
    34  	cy2 := C.complexDoubleSquared(y)
    35  	if cy2 != y2 {
    36  		t.Errorf("C.complexDoubleSquared(%v) = %v, want %v", y, cy2, y2)
    37  	}
    38  }