ios 关于识别设备常用宏

／／设备型号
#define IS_IPAD     [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad
#define IS_IPHONE   [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone
#define IS_IPHONE_4 (fabs((double)[[UIScreen mainScreen] bounds].size.height - (double )480) < DBL_EPSILON )
#define IS_IPHONE_5 (fabs((double)[[UIScreen mainScreen] bounds].size.height - (double )568) < DBL_EPSILON )
#define IS_IPHONE_6 (fabs((double)[[UIScreen mainScreen] bounds].size.height - (double )667) < DBL_EPSILON )
#define IS_IPHONE_6_PLUS (fabs((double)[[UIScreen mainScreen] bounds].size.height - (double )960) < DBL_EPSILON )

／／系统版本
#define IS_IOS_VERSION   floorf([[UIDevice currentDevice].systemVersion floatValue]
#define IS_IOS_5    floorf([[UIDevice currentDevice].systemVersion floatValue]) ==5.0 ? 1 : 0
#define IS_IOS_6    floorf([[UIDevice currentDevice].systemVersion floatValue]) ==6.0 ? 1 : 0
#define IS_IOS_7    floorf([[UIDevice currentDevice].systemVersion floatValue]) ==7.0 ? 1 : 0
#define IS_IOS_8    floorf([[UIDevice currentDevice].systemVersion floatValue]) ==8.0 ? 1 : 0
#define IS_IOS_9    floorf([[UIDevice currentDevice].systemVersion floatValue]) ==9.0 ? 1 : 0

／／物理屏幕尺寸
#define IH_DEVICE_HEIGHT    [[UIScreen mainScreen] bounds].size.height
#define IH_DEVICE_WIDTH     [[UIScreen mainScreen] bounds].size.width
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