Macros to check device types

Device Type Macro

#ifndef IS_WIDESCREEN
#define IS_WIDESCREEN   (fabs((double)[[UIScreen mainScreen] bounds].size.height - (double)568) < DBL_EPSILON)
#endif

#ifndef IS_IPHONE
#define IS_IPHONE       ([[[UIDevice currentDevice] model] isEqualToString:@"iPhone"])
#endif

#ifndef IS_IPOD
#define IS_IPOD         ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"])
#endif

#ifndef IS_IPAD
#define IS_IPAD         ([[[UIDevice currentDevice] model] isEqualToString:@"iPad"])
#endif

#ifndef IS_IPHONE5
#define IS_IPHONE5      (IS_WIDESCREEN && IS_IPHONE)
#endif

#ifndef IS_IPOD5
#define IS_IPOD5        (IS_WIDESCREEN && IS_IPOD)
#endif