Macro Symbol Index

 

C

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Strings library

Algorithms

Numerics

Date and time utilities

Input/output support

Localization support

Concurrency support (C11)

Technical Specifications

Symbol index

 

This page tries to list all the macro symbols that are available from the Standard Library. The symbols are written as follows:

• Function-like macro names with ().
• Type-generic macro names marked with (generic).

_ A B C D E F H I K L M N O P R S T U V W X

_ (underscore)

__alignas_is_defined (since C11)
__alignof_is_defined (since C11)
__bool_true_false_are_defined (since C99)
_Complex_I (since C99)
_Imaginary_I (since C99)
_IOFBF
_IOLBF
_IONBF

A

acos() (generic) (since C99)
acosh() (generic) (since C99)
alignas (keyword macro) (since C11)
alignof (keyword macro) (since C11)
and (operator macro) (since C95)
and_eq (operator macro) (since C95)
asin() (generic) (since C99)
asinh() (generic) (since C99)
assert()
atan() (generic) (since C99)
atan2() (generic) (since C99)
atanh() (generic) (since C99)

ATOMIC_TYPE_LOCK_FREE
ATOMIC_BOOL_LOCK_FREE (since C11) ATOMIC_CHAR_LOCK_FREE (since C11) ATOMIC_CHAR16_T_LOCK_FREE (since C11) ATOMIC_CHAR32_T_LOCK_FREE (since C11) ATOMIC_INT_LOCK_FREE (since C11) ATOMIC_LONG_LOCK_FREE (since C11) ATOMIC_POINTER_LOCK_FREE (since C11) ATOMIC_LLONG_LOCK_FREE (since C11) ATOMIC_SHORT_LOCK_FREE (since C11) ATOMIC_WCHAR_T_LOCK_FREE (since C11)

ATOMIC_FLAG_INIT (since C11)
ATOMIC_VAR_INIT() (since C11)(deprecated in C17)

B

bitand (operator macro) (since C95)
bitor (operator macro) (since C95)
bool (keyword macro) (since C99)
BOOL_WIDTH (since C23)
BUFSIZ

C

carg() (generic) (since C99)
cbrt() (generic) (since C99)
ceil() (generic) (since C99)
CHAR_BIT
CHAR_MAX
CHAR_MIN
CHAR_WIDTH (since C23)
cimag() (generic) (since C99)
CLOCKS_PER_SEC
CMPLX() (since C11)
CMPLXF() (since C11)
CMPLXL() (since C11)
compl (operator macro) (since C95)
complex (keyword macro) (since C99)
conj() (generic) (since C99)
copysign() (generic) (since C99)
cos() (generic) (since C99)
cosh() (generic) (since C99)
cproj() (generic) (since C99)
creal() (generic) (since C99)

D

DBL_DECIMAL_DIG (since C11)
DBL_DIG
DBL_EPSILON
DBL_HAS_SUBNORM (since C11)
DBL_MANT_DIG
DBL_MAX
DBL_MAX_10_EXP
DBL_MAX_EXP
DBL_MIN
DBL_MIN_10_EXP
DBL_MIN_EXP
DBL_TRUE_MIN (since C11)
DECIMAL_DIG (since C99)

E

EDOM
EILSEQ (since C95)
EOF
ERANGE
erf() (generic) (since C99)
erfc() (generic) (since C99)
errno (macro variable)
EXIT_FAILURE
EXIT_SUCCESS
exp() (generic) (since C99)
exp2() (generic) (since C99)
expm1() (generic) (since C99)

F

fabs() (generic) (since C99)
false (since C99)
fdim() (generic) (since C99)
FE_ALL_EXCEPT (since C99)
FE_DFL_ENV (since C99)
FE_DIVBYZERO (since C99)
FE_DOWNWARD (since C99)
FE_INEXACT (since C99)
FE_INVALID (since C99)
FE_OVERFLOW (since C99)
FE_TONEAREST (since C99)
FE_TOWARDZERO (since C99)
FE_UNDERFLOW (since C99)
FE_UPWARD (since C99)
FILENAME_MAX
floor() (generic) (since C99)
FLT_DECIMAL_DIG (since C11)
FLT_DIG
FLT_EPSILON
FLT_EVAL_METHOD (since C99)
FLT_HAS_SUBNORM (since C11)
FLT_MANT_DIG
FLT_MAX
FLT_MAX_10_EXP
FLT_MAX_EXP
FLT_MIN
FLT_MIN_10_EXP
FLT_MIN_EXP
FLT_RADIX
FLT_ROUNDS
FLT_TRUE_MIN (since C11)
fma() (generic) (since C99)
fmax() (generic) (since C99)
fmin() (generic) (since C99)
fmod() (generic) (since C99)
FOPEN_MAX
FP_FAST_FMA (since C99)
FP_FAST_FMAF (since C99)
FP_FAST_FMAL (since C99)
FP_ILOGB0 (since C99)
FP_ILOGBNAN (since C99)
FP_INFINITE (since C99)
FP_NAN (since C99)
FP_NORMAL (since C99)
FP_SUBNORMAL (since C99)
FP_ZERO (since C99)
fpclassify() (since C99)
frexp() (generic) (since C99)

H

HUGE_VAL
HUGE_VALF (since C99)
HUGE_VALL (since C99)
hypot() (generic) (since C99)

I

I (since C99)
ilogb() (generic) (since C99)
imaginary (keyword macro) (since C99)
INFINITY (since C99)

INTWIDTH_MAX
INT_FAST16_MAX (since C99) INT_FAST32_MAX (since C99) INT_FAST64_MAX (since C99) INT_FAST8_MAX (since C99) INT_LEAST16_MAX (since C99) INT_LEAST32_MAX (since C99) INT_LEAST64_MAX (since C99) INT_LEAST8_MAX (since C99) INT16_MAX (since C99) INT32_MAX (since C99) INT64_MAX (since C99) INT8_MAX (since C99) INTMAX_MAX (since C99) INTPTR_MAX (since C99)

INTWIDTH_MIN
INT_FAST16_MIN (since C99) INT_FAST32_MIN (since C99) INT_FAST64_MIN (since C99) INT_FAST8_MIN (since C99) INT_LEAST16_MIN (since C99) INT_LEAST32_MIN (since C99) INT_LEAST64_MIN (since C99) INT_LEAST8_MIN (since C99) INT16_MIN (since C99) INT32_MIN (since C99) INT64_MIN (since C99) INT8_MIN (since C99) INTMAX_MIN (since C99) INTPTR_MIN (since C99)

INTWIDTH_WIDTH
INT_FAST16_WIDTH (since C23) INT_FAST32_WIDTH (since C23) INT_FAST64_WIDTH (since C23) INT_FAST8_WIDTH (since C23) INT_LEAST16_WIDTH (since C23) INT_LEAST32_WIDTH (since C23) INT_LEAST64_WIDTH (since C23) INT_LEAST8_WIDTH (since C23) INT16_WIDTH (since C23) INT32_WIDTH (since C23) INT64_WIDTH (since C23) INT8_WIDTH (since C23) INTMAX_WIDTH (since C23) INTPTR_WIDTH (since C23)

INT_MAX
INT_MIN
INT_WIDTH (since C23)
INT16_C() (since C99)
INT32_C() (since C99)
INT64_C() (since C99)
INT8_C() (since C99)
INTMAX_C() (since C99)
isfinite() (since C99)
isgreater() (since C99)
isgreaterequal() (since C99)
isinf() (since C99)
isless() (since C99)
islessequal() (since C99)
islessgreater() (since C99)
isnan() (since C99)
isnormal() (since C99)
isunordered() (since C99)

K

kill_dependency() (since C11)

L

L_tmpnam
L_tmpnam_s (since C11)
LC_ALL
LC_COLLATE
LC_CTYPE
LC_MONETARY
LC_NUMERIC
LC_TIME
LDBL_DECIMAL_DIG (since C11)
LDBL_DIG
LDBL_EPSILON
LDBL_HAS_SUBNORM (since C11)
LDBL_MANT_DIG
LDBL_MAX
LDBL_MAX_10_EXP
LDBL_MAX_EXP
LDBL_MIN
LDBL_MIN_10_EXP
LDBL_MIN_EXP
LDBL_TRUE_MIN (since C11)
ldexp() (generic) (since C99)
lgamma() (generic) (since C99)
LLONG_MAX (since C99)
LLONG_MIN (since C99)
LLONG_WIDTH (since C23)
llrint() (generic) (since C99)
llround() (generic) (since C99)
log() (generic) (since C99)
log10() (generic) (since C99)
log1p() (generic) (since C99)
log2() (generic) (since C99)
logb() (generic) (since C99)
LONG_MAX
LONG_MIN
LONG_WIDTH (since C23)
lrint() (generic) (since C99)
lround() (generic) (since C99)

M

MATH_ERREXCEPT (since C99)
math_errhandling (since C99)
MATH_ERRNO (since C99)
MB_CUR_MAX (macro variable)
MB_LEN_MAX

N

NAN (since C99)
nearbyint() (generic) (since C99)
nextafter() (generic) (since C99)
nexttoward() (generic) (since C99)
noreturn (keyword macro) (since C11)
not (operator macro) (since C95)
not_eq (operator macro) (since C95)
NULL

O

offsetof()
ONCE_FLAG_INIT (since C11)
or (operator macro) (since C95)
or_eq (operator macro) (since C95)

P

pow() (generic) (since C99)

PRI{d i o u x X}WIDTH (macro string)

PRId16 (since C99) PRId32 (since C99) PRId64 (since C99) PRId8 (since C99) PRIdFAST16 (since C99) PRIdFAST32 (since C99) PRIdFAST64 (since C99) PRIdFAST8 (since C99) PRIdLEAST16 (since C99) PRIdLEAST32 (since C99) PRIdLEAST64 (since C99) PRIdLEAST8 (since C99) PRIdMAX (since C99) PRIdPTR (since C99) PRIi16 (since C99) PRIi32 (since C99) PRIi64 (since C99) PRIi8 (since C99) PRIiFAST16 (since C99) PRIiFAST32 (since C99) PRIiFAST64 (since C99) PRIiFAST8 (since C99) PRIiLEAST16 (since C99) PRIiLEAST32 (since C99) PRIiLEAST64 (since C99) PRIiLEAST8 (since C99) PRIiMAX (since C99) PRIiPTR (since C99) PRIo16 (since C99) PRIo32 (since C99) PRIo64 (since C99) PRIo8 (since C99) PRIoFAST16 (since C99) PRIoFAST32 (since C99) PRIoFAST64 (since C99) PRIoFAST8 (since C99) PRIoLEAST16 (since C99) PRIoLEAST32 (since C99) PRIoLEAST64 (since C99) PRIoLEAST8 (since C99) PRIoMAX (since C99) PRIoPTR (since C99) PRIu16 (since C99) PRIu32 (since C99) PRIu64 (since C99) PRIu8 (since C99) PRIuFAST16 (since C99) PRIuFAST32 (since C99) PRIuFAST64 (since C99) PRIuFAST8 (since C99) PRIuLEAST16 (since C99) PRIuLEAST32 (since C99) PRIuLEAST64 (since C99) PRIuLEAST8 (since C99) PRIuMAX (since C99) PRIuPTR (since C99) PRIx16 (since C99) PRIX16 (since C99) PRIx32 (since C99) PRIX32 (since C99) PRIx64 (since C99) PRIX64 (since C99) PRIx8 (since C99) PRIX8 (since C99) PRIxFAST16 (since C99) PRIXFAST16 (since C99) PRIxFAST32 (since C99) PRIXFAST32 (since C99) PRIxFAST64 (since C99) PRIXFAST64 (since C99) PRIxFAST8 (since C99) PRIXFAST8 (since C99) PRIxLEAST16 (since C99) PRIXLEAST16 (since C99) PRIxLEAST32 (since C99) PRIXLEAST32 (since C99) PRIxLEAST64 (since C99) PRIXLEAST64 (since C99) PRIxLEAST8 (since C99) PRIXLEAST8 (since C99) PRIxMAX (since C99) PRIXMAX (since C99) PRIxPTR (since C99) PRIXPTR (since C99)

PTRDIFF_MAX (since C99)
PTRDIFF_MIN (since C99)
PTRDIFF_WIDTH (since C23)

R

RAND_MAX
remainder() (generic) (since C99)
remquo() (generic) (since C99)
rint() (generic) (since C99)
round() (generic) (since C99)
RSIZE_MAX (macro variable) (since C11)

S

scalbln() (generic) (since C99)
scalbn() (generic) (since C99)
SCHAR_MAX
SCHAR_MIN
SCHAR_WIDTH (since C23)

SCN{d i o u x}WIDTH (macro string)

SCNd16 (since C99) SCNd32 (since C99) SCNd64 (since C99) SCNd8 (since C99) SCNdFAST16 (since C99) SCNdFAST32 (since C99) SCNdFAST64 (since C99) SCNdFAST8 (since C99) SCNdLEAST16 (since C99) SCNdLEAST32 (since C99) SCNdLEAST64 (since C99) SCNdLEAST8 (since C99) SCNdMAX (since C99) SCNdPTR (since C99) SCNi16 (since C99) SCNi32 (since C99) SCNi64 (since C99) SCNi8 (since C99) SCNiFAST16 (since C99) SCNiFAST32 (since C99) SCNiFAST64 (since C99) SCNiFAST8 (since C99) SCNiLEAST16 (since C99) SCNiLEAST32 (since C99) SCNiLEAST64 (since C99) SCNiLEAST8 (since C99) SCNiMAX (since C99) SCNiPTR (since C99) SCNo16 (since C99) SCNo32 (since C99) SCNo64 (since C99) SCNo8 (since C99) SCNoFAST16 (since C99) SCNoFAST32 (since C99) SCNoFAST64 (since C99) SCNoFAST8 (since C99) SCNoLEAST16 (since C99) SCNoLEAST32 (since C99) SCNoLEAST64 (since C99) SCNoLEAST8 (since C99) SCNoMAX (since C99) SCNoPTR (since C99) SCNu16 (since C99) SCNu32 (since C99) SCNu64 (since C99) SCNu8 (since C99) SCNuFAST16 (since C99) SCNuFAST32 (since C99) SCNuFAST64 (since C99) SCNuFAST8 (since C99) SCNuLEAST16 (since C99) SCNuLEAST32 (since C99) SCNuLEAST64 (since C99) SCNuLEAST8 (since C99) SCNuMAX (since C99) SCNuPTR (since C99) SCNx16 (since C99) SCNx32 (since C99) SCNx64 (since C99) SCNx8 (since C99) SCNxFAST16 (since C99) SCNxFAST32 (since C99) SCNxFAST64 (since C99) SCNxFAST8 (since C99) SCNxLEAST16 (since C99) SCNxLEAST32 (since C99) SCNxLEAST64 (since C99) SCNxLEAST8 (since C99) SCNxMAX (since C99) SCNxPTR (since C99)

SEEK_CUR
SEEK_END
SEEK_SET
setjmp()
SHRT_MAX
SHRT_MIN
SHRT_WIDTH (since C23)
SIG_ATOMIC_MAX (since C99)
SIG_ATOMIC_MIN (since C99)
SIG_ATOMIC_WIDTH (since C23)
SIG_DFL
SIG_ERR
SIG_IGN
SIGABRT
SIGFPE
SIGILL
SIGINT
signbit() (since C99)
SIGSEGV
SIGTERM
sin() (generic) (since C99)
sinh() (generic) (since C99)
SIZE_MAX (since C99)
SIZE_WIDTH (since C23)
sqrt() (generic) (since C99)
static_assert (keyword macro) (since C11)
stderr
stdin
stdout

T

tan() (generic) (since C99)
tanh() (generic) (since C99)
tgamma() (generic) (since C99)
thread_local (keyword macro) (since C11)
TIME_UTC (since C11)
TMP_MAX
TMP_MAX_S (since C11)
true (since C99)
trunc() (generic) (since C99)
TSS_DTOR_ITERATIONS (since C11)

U

UCHAR_MAX
UCHAR_WIDTH (since C23)

UINTWIDTH_MAX
UINT_FAST16_MAX (since C99) UINT_FAST32_MAX (since C99) UINT_FAST64_MAX (since C99) UINT_FAST8_MAX (since C99) UINT_LEAST16_MAX (since C99) UINT_LEAST32_MAX (since C99) UINT_LEAST64_MAX (since C99) UINT_LEAST8_MAX (since C99) UINT16_MAX (since C99) UINT32_MAX (since C99) UINT64_MAX (since C99) UINT8_MAX (since C99) UINTMAX_MAX (since C99) UINTPTR_MAX (since C99)

UINTWIDTH_WIDTH
UINT_FAST16_WIDTH (since C23) UINT_FAST32_WIDTH (since C23) UINT_FAST64_WIDTH (since C23) UINT_FAST8_WIDTH (since C23) UINT_LEAST16_WIDTH (since C23) UINT_LEAST32_WIDTH (since C23) UINT_LEAST64_WIDTH (since C23) UINT_LEAST8_WIDTH (since C23) UINT16_WIDTH (since C23) UINT32_WIDTH (since C23) UINT64_WIDTH (since C23) UINT8_WIDTH (since C23) UINTMAX_WIDTH (since C23) UINTPTR_WIDTH (since C23)

UINT_MAX
UINT_WIDTH (since C23)
UINT16_C() (since C99)
UINT32_C() (since C99)
UINT64_C() (since C99)
UINT8_C() (since C99)
UINTMAX_C() (since C99)
ULLONG_MAX (since C99)
ULLONG_WIDTH (since C23)
ULONG_MAX
ULONG_WIDTH (since C23)
USHRT_MAX
USHRT_WIDTH (since C23)

V

va_arg()
va_copy() (since C99)
va_end()
va_list
va_start()

W

WCHAR_MAX (since C99)
WCHAR_MIN (since C99)
WCHAR_WIDTH (since C23)
WEOF (since C95)
WINT_MAX (since C99)
WINT_MIN (since C99)
WINT_WIDTH (since C23)

X

xor (operator macro) (since C95)
xor_eq (operator macro) (since C95)