github.com/hxx258456/ccgo@v0.0.5-0.20230213014102-48b35f46f66f/internal/bytealg/count_native.go (about)

     1  // Copyright 2018 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  //go:build amd64 || arm || arm64 || ppc64le || ppc64 || riscv64 || s390x
     6  // +build amd64 arm arm64 ppc64le ppc64 riscv64 s390x
     7  
     8  package bytealg
     9  
    10  //go:noescape
    11  func Count(b []byte, c byte) int
    12  
    13  //go:noescape
    14  func CountString(s string, c byte) int
    15  
    16  // A backup implementation to use by assembly.
    17  func countGeneric(b []byte, c byte) int {
    18  	n := 0
    19  	for _, x := range b {
    20  		if x == c {
    21  			n++
    22  		}
    23  	}
    24  	return n
    25  }
    26  func countGenericString(s string, c byte) int {
    27  	n := 0
    28  	for i := 0; i < len(s); i++ {
    29  		if s[i] == c {
    30  			n++
    31  		}
    32  	}
    33  	return n
    34  }