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supportsetlocaleNumericsabsacosacosfacoshacoshfacoshlacoslasinasinfasinhasinhfasinhlasinlatanatan2atan2fatan2latanfatanhatanhfatanhlatanlcabscabsfcabslcacoscacosfcacoshcacoshfcacoshlcacoslcargcargfcarglcasincasinfcasinhcasinhfcasinhlcasinlcatancatanfcatanhcatanhfcatanhlcatanlcbrtcbrtfcbrtlccosccosfccoshccoshfccoshlccoslceilceilfceillcexpcexpfcexplcimagcimagfcimaglclogclogfcloglCMPLXCMPLXFCMPLXLCommon mathematical functionscomplexComplex number arithmeticconjconjfconjlcopysigncopysignfcopysignlcoscosfcoshcoshfcoshlcoslcpowcpowfcpowlcprojcprojfcprojlcrealcrealfcreallcsincsinfcsinhcsinhfcsinhlcsinlcsqrtcsqrtfcsqrtlctanctanfctanhctanhfctanhlctanldivdouble_terferfcerfcferfclerfferflexpexp2exp2fexp2lexpfexplexpm1expm1fexpm1lfabsfabsffabslfdimfeclearexceptfegetenvfegetexceptflagfegetroundfeholdexceptferaiseexceptfesetenvfesetexceptflagfesetroundfetestexceptfeupdateenvFE_ALL_EXCEPTFE_DFL_ENVFE_DIVBYZEROFE_DOWNWARDFE_INEXACTFE_INVALIDFE_OVERFLOWFE_TONEARESTFE_TOWARDZEROFE_UNDERFLOWFE_UPWARDFloating-point environmentfloat_tfloorfloorffloorlfmafmaffmalfmaxfmaxffmaxlfminfminffminlfmodfmodffmodlfpclassifyFP_INFINITEFP_NANFP_NORMALFP_SUBNORMALFP_ZEROfrexpfrexpffrexplHUGE_VALHUGE_VALFHUGE_VALLhypothypotfhypotlIilogbilogbfilogblimaginaryimaxabsimaxdivINFINITYisfiniteisgreaterisgreaterequalisinfislessislessequalislessgreaterisnanisnormalisunorderedlabsldexpldexpfldexplldivlgammalgammaflgammalllabslldivllrintllrintfllrintlllroundllroundfllroundlloglog10log10flog10llog1plog1pflog1pllog2log2flog2llogblogbflogbllogflogllrintlrintflrintllroundlroundflroundlMATH_ERREXCEPTmath_errhandlingMATH_ERRNOmodfmodffmodflnanNANnanfnanlnearbyintnearbyintfnearbyintlnextafternextafterfnextafterlnexttowardnexttowardfnexttowardlNumericspowpowfpowlPseudo-random number generationrandRAND_MAXremainderremainderfremainderlremquoremquofremquolrintrintfrintlroundroundfroundlscalblnscalblnfscalblnlscalbnscalbnfscalbnlsignbitsinsinfsinhsinhfsinhlsinlsqrtsqrtfsqrtlsrandtantanftanhtanhftanhltanltgammatgammaftgammaltrunctruncftrunclType-generic math_Complex_I_Imaginary_IProgram supportabortatexitat_quick_exitexitEXIT_FAILUREEXIT_SUCCESSgetenvgetenv_sjmp_buflongjmpProgram support utilitiesquick_exitraisesetjmpSIGABRTSIGFPESIGILLSIGINTsignalSIGSEGVSIGTERMsig_atomic_tSIG_DFLSIG_ERRSIG_IGNsystem_ExitStringsatofatoiatolatollbtowcc16rtombc32rtombchar16_tchar32_tisalnumisalphaisblankiscntrlisdigitisgraphislowerisprintispunctisspaceisupperiswalnumiswalphaiswblankiswcntrliswctypeiswdigitiswgraphiswloweriswprintiswpunctiswspaceiswupperiswxdigitisxdigitmblenmbrlenmbrtoc16mbrtoc32mbrtowcmbsinitmbsrtowcsmbsrtowcs_smbstate_tmbstowcsmbstowcs_smbtowcmemchrmemcmpmemcpymemcpy_smemmovememmove_smemsetmemset_sNull-terminated byte stringsNull-terminated multibyte stringsNull-terminated wide stringsstrcatstrcat_sstrchrstrcmpstrcollstrcpystrcpy_sstrcspnstrerrorstrerrorlen_sstrerror_sStrings librarystrlenstrncatThread supportcall_oncecnd_broadcastcnd_destroycnd_initcnd_signalcnd_timedwaitcnd_waitmtx_destroymtx_initmtx_lockmtx_plainmtx_recursivemtx_timedmtx_timedlockmtx_trylockmtx_unlockonce_flagONCE_FLAG_INITthrd_busythrd_createthrd_currentthrd_detachthrd_equalthrd_errorthrd_exitthrd_jointhrd_nomemthrd_sleepthrd_successthrd_timedoutthrd_yieldThread support librarythread_localtss_createtss_deleteTSS_DTOR_ITERATIONStss_gettss_setType supportBoolean type support libraryFixed width integer typesFLT_EVAL_METHODFLT_ROUNDSmax_align_tNULLNumeric limitsoffsetofptrdiff_tsize_tType supportVariadic functionsVariadic functionsva_argva_copyva_endva_listva_start
文字

类型

| 在头文件<stdint.h>中定义

|:----|

| int8_tint16_tint32_tint64_t | 有符号整数类型,其宽度分别为8,16,32和64位,不带填充位,并使用2的补码作为负值(仅当实现直接支持该类型时才提供)|

| int_fast8_tint_fast16_tint_fast32_tint_fast64_t | 最快的有符号整数类型,其宽度至少分别为8,16,32和64位|

| int_least8_tint_least16_tint_least32_tint_least64_t | 最小有符号整数类型,宽度至少分别为8,16,32和64位|

| intmax_t | 最大宽度整数类型|

| intptr_t | 整数类型可以容纳一个指针|

| uint8_tuint16_tuint32_tuint64_t | 无符号整数类型,宽度分别为8,16,32和64位(仅当实现直接支持类型时才提供)|

| uint_fast8_tuint_fast16_tuint_fast32_tuint_fast64_t | 最快的无符号整数类型,分别具有至少8,16,32和64位的宽度

| uint_least8_tuint_least16_tuint_least32_tuint_least64_t | 最小无符号整数类型,分别具有至少8,16,32和64位的宽度|

| uintmax_t | 最大宽度无符号整数类型|

| uintptr_t | 无符号整数类型,可以存放指针|

宏常量

| 在头文件<stdint.h>中定义 |

|:----|

| 有符号整数:最小值|

| INT8_MININT16_MININT32_MININT64_MIN | int8_t,int16_t,int32_t,int64_t(macroconstant)类型的对象的最小值|

| INT_FAST8_MININT_FAST16_MININT_FAST32_MININT_FAST64_MIN | int_fast8_t,int_fast16_t,int_fast32_t,int_fast64_t(宏常量)类型的对象的最小值|

| INT_LEAST8_MININT_LEAST16_MININT_LEAST32_MININT_LEAST64_MIN | int_least8_t,int_least16_t,int_least32_t,int_least64_t(宏常量)类型的对象的最小值|

| INTPTR_MIN | intptr_t(宏常量)|类型的对象的最小值

| INTMAX_MIN | intmax_t(宏常量)|类型的对象的最小值

| 有符号整数:最大值|

| INT8_MAXINT16_MAXINT32_MAXINT64_MAX | int8_t,int16_t,int32_t,int64_t(宏常量)类型的对象的最大值|

| INT_FAST8_MAXINT_FAST16_MAXINT_FAST32_MAXINT_FAST64_MAX | int_fast8_t,int_fast16_t,int_fast32_t,int_fast64_t(宏常量)类型的对象的最大值|

| INT_LEAST8_MAXINT_LEAST16_MAXINT_LEAST32_MAXINT_LEAST64_MAX | int_least8_t,int_least16_t,int_least32_t,int_least64_t(宏常量)类型的对象的最大值|

| INTPTR_MAX | intptr_t(宏常量)|类型的对象的最大值

| INTMAX_MAX | intmax_t(宏常量)|类型的对象的最大值

| 无符号整数:最大值|

| UINT8_MAXUINT16_MAXUINT32_MAXUINT64_MAX | 类型为uint8_t,uint16_t,uint32_t,uint64_t(宏常量)的对象的最大值|

| UINT_FAST8_MAXUINT_FAST16_MAXUINT_FAST32_MAXUINT_FAST64_MAX | 类型为uint_fast8_t,uint_fast16_t,uint_fast32_t,uint_fast64_t(宏常量)的对象的最大值|

| UINT_LEAST8_MAXUINT_LEAST16_MAXUINT_LEAST32_MAXUINT_LEAST64_MAX | 类型为uint_least8_t,uint_least16_t,uint_least32_t,uint_least64_t(宏常量)的对象的最大值|

| UINTPTR_MAX | 类型为uintptr_t(宏常量)|的对象的最大值

| UINTMAX_MAX | 类型为uintmax_t(宏常量)|的对象的最大值

最小宽度整数常量的函数宏

INT8_CINT16_CINT32_CINT64_C

展开为一个整数常量表达式,其中具有由其参数指定的值,并且类型分别为int_least8_t,int_least16_t,int_least32_t,int_least64_t(函数宏)

INTMAX_C

展开为具有由其参数指定的值的整型常量表达式和类型intmax_t(函数宏)

UINT8_CUINT16_CUINT32_CUINT64_C

展开为具有由其参数指定的值的整型常量表达式,以及类型分别为uint_least8_t,uint_least16_t,uint_least32_t,uint_least64_t(函数宏)

UINTMAX_C

展开为具有由其参数指定的值的整型常量表达式以及类型uintmax_t(函数宏)

#include <stdint.h>UINT64_C(0x123) // might expand to 0x123ULL or 0x123UL

格式化宏常量

| 在头文件<inttypes.h>中定义 |

|:----|

fprintf为函数族设置常量格式

等价于int orunsigned int

描述

数据类型的宏



uintx_t

uint_leastx_t

uint_fastx_t

uintmax_t型

uintptr_t的

| x = 8,16,32或64 |

| d | 输出一个带符号的十进制整数值| PRIdx | PRIdLEASTx | PRIdFASTx | PRIdMAX | PRIdPTR |

| i | PRIix | PRIiLEASTx | PRIiFASTx | PRIiMAX | PRIiPTR |

| u | 输出一个无符号的十进制整数值| PRIux | PRIuLEASTx | PRIuFASTx | PRIuMAX | PRIuPTR |

| o | 输出一个无符号的八进制整数值| PRIox | PRIoLEASTx | PRIoFASTx | PRIoMAX | PRIoPTR |

| x | 输出一个无符号的小写十六进制整数值| PRIxx | PRIxLEASTx | PRIxFASTx | PRIxMAX | PRIxPTR |

| X | 输出一个无符号的大写十六进制整数值| PRIXx | PRIXLEASTx | PRIXFASTx | PRIXMAX | PRIXPTR |

fscanf为函数族设置常量格式

等价于int orunsigned int

描述

数据类型的宏



uintx_t

uint_leastx_t

uint_fastx_t

uintmax_t型

uintptr_t的

| x = 8,16,32或64 |

| d | 输入一个带符号的十进制整数值| SCNdx | SCNdLEASTx | SCNdFASTx | SCNdMAX | SCNdPTR |

| 我| 输入有符号的整数值(基数由解析的第一个字符决定)| SCNix | SCNiLEASTx | SCNiFASTx | SCNiMAX | SCNiPTR |

| u | 输入一个无符号的十进制整数值| SCNux | SCNuLEASTx | SCNuFASTx | SCNuMAX | SCNuPTR |

| o | 输入一个无符号的八进制整数值| SCNox | SCNoLEASTx | SCNoFASTx | SCNoMAX | SCNoPTR |

| x | 输入一个无符号的十六进制整数值| SCNxx | SCNxLEASTx | SCNxFASTx | SCNxMAX | SCNxPTR |

#include <stdio.h>#include <inttypes.h>
 int main(void){    printf("%zu\n", sizeof(int64_t));    printf("%s\n", PRId64);    printf("%+"PRId64"\n", INT64_MIN);    printf("%+"PRId64"\n", INT64_MAX);
 
    int64_t n = 7;    printf("%+"PRId64"\n", n);}

可能的输出:

8lld-9223372036854775808+9223372036854775807+7

扩展内容

  • 算术类型

| 固定宽度整数类型的C ++文档 |

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