ptr1 | 指向第一个内存缓冲区的指针。 |
ptr2 | 指向要与第一个内存缓冲区比较的第二个内存缓冲区的指针。 |
size | 要比较的字节数。 |
void 如果内容相同,则为 0,否则为非零。
通过将第一个给定内存缓冲区中的指定内存区域与第二个给定内存缓冲区中的相同区域进行比较,检查两个内存区域是否相同。
存储区域可以重叠。如果两个区域的内容相同,则返回 0。
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