转 https://blog.csdn.net/k178441367/article/details/45842627
从后台获取的userid 用long类型接收的 ，在 iPhone5 和5以上的手机上面表现不同， 于是网上搜了下
从老外网上搜到的几种判断ios 32,64位的办法
方法一：
#include
#include
#include
void foo() {
size_t size;
cpu_type_t type;
size = sizeof(type);
sysctlbyname("hw.cputype", &type, &size, NULL, 0);
if (type == CPU_TYPE_ARM64) {
// ARM 64-bit CPU
} else if (type == CPU_TYPE_ARM) {
// ARM 32-bit CPU
} else {
// Something else.
}
}
方法二：
#if defined(__arm__)
NSLog(@"32-bit App");
#elif defined(__arm64__)
NSLog(@"64-bit App");
#else
NSLog(@"Not running ARM");
#endif
方法三：
if (sizeof(void*) == 4) {
NSLog(@"32-bit App");
} else if (sizeof(void*) == 8) {
NSLog(@"64-bit App");
}
方法四：
#include
+ (BOOL) is64bitHardware
{
#if __LP64__
// The app has been compiled for 64-bit intel and runs as 64-bit intel
return YES;
#endif
// Use some static variables to avoid performing the tasks several times.
static BOOL sHardwareChecked = NO;
static BOOL sIs64bitHardware = NO;
if(!sHardwareChecked)
{
sHardwareChecked = YES;
#if TARGET_IPHONE_SIMULATOR
// The app was compiled as 32-bit for the iOS Simulator.
// We check if the Simulator is a 32-bit or 64-bit simulator using the function is64bitSimulator()
// See http://blog.timac.org/?p=886
sIs64bitHardware = is64bitSimulator();
#else
// The app runs on a real iOS device: ask the kernel for the host info.
struct host_basic_info host_basic_info;
unsigned int count;
kern_return_t returnValue = host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)(&host_basic_info), &count);
if(returnValue != KERN_SUCCESS)
{
sIs64bitHardware = NO;
}
sIs64bitHardware = (host_basic_info.cpu_type == CPU_TYPE_ARM64);
#endif // TARGET_IPHONE_SIMULATOR
}
return sIs64bitHardware;
}
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作者：wnphp
来源：CSDN
原文：https://blog.csdn.net/k178441367/article/details/45842627
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