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36 lines
703 B
Go
36 lines
703 B
Go
// Copyright © 2018 ChaiShushan <chaishushan{AT}gmail.com>.
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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package main
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/*
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#include <stdlib.h>
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typedef int (*qsort_cmp_func_t)(const void* a, const void* b);
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extern int go_qsort_compare(void* a, void* b);
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*/
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import "C"
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import (
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"fmt"
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"unsafe"
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)
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func main() {
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values := []int32{42, 9, 101, 95, 27, 25}
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C.qsort(unsafe.Pointer(&values[0]),
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C.size_t(len(values)), C.size_t(unsafe.Sizeof(values[0])),
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(C.qsort_cmp_func_t)(unsafe.Pointer(C.go_qsort_compare)),
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)
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fmt.Println(values)
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}
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//export go_qsort_compare
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func go_qsort_compare(a, b unsafe.Pointer) C.int {
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pa := (*C.int)(a)
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pb := (*C.int)(b)
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return C.int(*pa - *pb)
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}
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