Fastest integer types of at least 16 bits

Names specified here
Name	Description	Notes				Source
`atomic_int_fast16_t`	Atomic integer type		?		T	`<stdatomic.h>`		C11
`atomic_uint_fast16_t`	Atomic integer type		?		T	`<stdatomic.h>`		C11
`INT_FAST16_MAX`	Maximum value of `int_fast16_t`	L		M		`<stdint.h>`	C99	C11
`INT_FAST16_MIN`	Minimum value of `int_fast16_t`	L		M		`<stdint.h>`	C99	C11
`int_fast16_t`	Fastest signed integer type with at least 16 bits	L			T	`<stdint.h>`	C99	C11
`PRIdFAST16`	Decimal output conversion specifier for `int_fast16_t`			M		`<inttypes.h>`	C99	C11
`PRIiFAST16`	Decimal output conversion specifier for `int_fast16_t`			M		`<inttypes.h>`	C99	C11
`PRIoFAST16`	Octal output conversion specifier for `uint_fast16_t`			M		`<inttypes.h>`	C99	C11
`PRIuFAST16`	Decimal output conversion specifier for `uint_fast16_t`			M		`<inttypes.h>`	C99	C11
`PRIXFAST16`	Hexdecimal output conversion specifier for `uint_fast16_t`			M		`<inttypes.h>`	C99	C11
`PRIxFAST16`	Hexdecimal output conversion specifier for `uint_fast16_t`			M		`<inttypes.h>`	C99	C11
`SCNdFAST16`	Decimal input conversion specifier for `int_fast16_t`			M		`<inttypes.h>`	C99	C11
`SCNiFAST16`	General input conversion specifier for `int_fast16_t`			M		`<inttypes.h>`	C99	C11
`SCNoFAST16`	Octal input conversion specifier for `uint_fast16_t`			M		`<inttypes.h>`	C99	C11
`SCNuFAST16`	Decimal input conversion specifier for `uint_fast16_t`			M		`<inttypes.h>`	C99	C11
`SCNxFAST16`	Hexdecimal input conversion specifier for `uint_fast16_t`			M		`<inttypes.h>`	C99	C11
`UINT_FAST16_MAX`	Maximum value of `uint_fast16_t`	L		M		`<stdint.h>`	C99	C11
`uint_fast16_t`	Fastest unsigned integer type with at least 16 bits	L			T	`<stdint.h>`	C99	C11

uint_fast16_t and int_fast16_t are the fastest integer types of at least 16 bits. uint_fast16_t is unsigned, and has the range zero to UINT_FAST16_MAX, which is at least [0, +65535]. int_fast16_t is signed, and has the range INT_FAST16_MIN to INT_FAST16_MAX, which is at least [−32767, +32767].

The following macros can be used in the fmt argument of printf to print arguments of types uint_fast16_t and int_fast16_t:

PRIuFAST16
PRIoFAST16
PRIxFAST16
PRIXFAST16
PRIdFAST16
PRIiFAST16

The following macros can be used in the fmt argument of scanf to scan arguments of types uint_fast16_t * and int_fast16_t *:

SCNuFAST16
SCNoFAST16
SCNxFAST16
SCNdFAST16
SCNiFAST16

atomic_uint_fast16_t is an alias for _Atomic uint_fast16_t. atomic_int_fast16_t is an alias for _Atomic int_fast16_t.

Related types:

uint16_t
int16_t
uint_least16_t
int_least16_t
uint_fast16_t
int_fast16_t

Property		`uint_fast16_t`	`int_fast16_t`
Minimum width (bits)		16
Lowest value		0	≤−32767
Highest value		≥+65535	≥+32767
`printf`	base 10	`"%" PRIuFAST16`	`"%" PRIdFAST16` or `"%" PRIiFAST16`
	base 8	`"%" PRIoFAST16`
	upper-case base 16	`"%" PRIXFAST16`
	lower-case base 16	`"%" PRIxFAST16`
`scanf`	base 10	`"%" SCNuFAST16`	`"%" SCNdFAST16`
	base 8	`"%" SCNoFAST16`
	base 16	`"%" SCNxFAST16`
	base 16, 8 or 10 by prefix		`"%" SCNiFAST16`