参数资料
型号: SW006013
厂商: Microchip Technology
文件页数: 47/246页
文件大小: 0K
描述: C COMPILER MPLAB FOR DSPIC DSC
标准包装: 1
类型: MPLAB? C 编译器
适用于相关产品: dSPIC DSCs
产品目录页面: 659 (CN2011-ZH PDF)
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页当前第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页第171页第172页第173页第174页第175页第176页第177页第178页第179页第180页第181页第182页第183页第184页第185页第186页第187页第188页第189页第190页第191页第192页第193页第194页第195页第196页第197页第198页第199页第200页第201页第202页第203页第204页第205页第206页第207页第208页第209页第210页第211页第212页第213页第214页第215页第216页第217页第218页第219页第220页第221页第222页第223页第224页第225页第226页第227页第228页第229页第230页第231页第232页第233页第234页第235页第236页第237页第238页第239页第240页第241页第242页第243页第244页第245页第246页
Standard C Libraries
2.13
<STDIO.H> INPUT AND OUTPUT
The header file stdio.h consists of types, macros and functions that provide support
to perform input and output operations on files and streams. When a file is opened it is
associated with a stream. A stream is a pipeline for the flow of data into and out of files.
Because different systems use different properties, the stream provides more uniform
properties to allow reading and writing of the files.
Streams can be text streams or binary streams. Text streams consist of a sequence of
characters divided into lines. Each line is terminated with a newline (‘ \n ’) character. The
characters may be altered in their internal representation, particularly in regards to line
endings. Binary streams consist of sequences of bytes of information. The bytes trans-
mitted to the binary stream are not altered. There is no concept of lines - the file is just
a series of bytes.
At start-up three streams are automatically opened: stdin , stdout , and stderr . stdin
provides a stream for standard input, stdout is standard output and stderr is the stan-
dard error. Additional streams may be created with the fopen function. See fopen for
the different types of file access that are permitted. These access types are used by
fopen and freopen .
The type FILE is used to store information about each opened file stream. It includes
such things as error indicators, end-of-file indicators, file position indicators, and other
internal status information needed to control a stream. Many functions in the stdio use
FILE as an argument.
There are three types of buffering: unbuffered, line buffered and fully buffered. Unbuf-
fered means a character or byte is transferred one at a time. Line buffered collects and
transfers an entire line at a time (i.e., the newline character indicates the end of a line).
Fully buffered allows blocks of an arbitrary size to be transmitted. The functions setbuf
and setvbuf control file buffering.
The stdio.h file also contains functions that use input and output formats. The input
formats, or scan formats, are used for reading data. Their descriptions can be found
under scanf , but they are also used by fscanf and sscanf . The output formats, or print
formats, are used for writing data. Their descriptions can be found under printf .
These print formats are also used by fprintf , sprintf , vfprintf , vprintf and
vsprintf .
2.13.1
Compiler Options
Certain compiler options may affect how standard I/O performs. In an effort to provide
a more tailored version of the formatted I/O routines, the tool chain may convert a call
to a printf or scanf style function to a different call. The options are summarized
below:
?The -msmart-io option, when enabled, will attempt to convert printf , scanf
and other functions that use the input output formats to an integer only variant.
The functionality is the same as that of the C standard forms, minus the support
for floating-point output. -msmart-io=0 disables this feature and no conversion
will take place. -msmart-io=1 or -msmart-io (the default) will convert a func-
tion call if it can be proven that an I/O function will never be presented with a
floating-point conversion. -msmart-io=2 is more optimistic than the default and
will assume that non-constant format strings or otherwise unknown format
strings will not contain a floating-point format. In the event that -msmart-io=2 is
used with a floating-point format, the format letter will appear as literal text and
its corresponding argument will not be consumed.
? 2008 Microchip Technology Inc.
DS51456E-page 43
相关PDF资料
PDF描述
SW006015 C COMPILER MPLAB C32
SW300003-EVAL LIBRARY SOFT MODEM-EVAL ONLY
SW300010-EVAL SPEECH RECOG LIBRARY-EVAL ONLY
SW300040-EVAL LIBRARY NOISE SUPPR-EVAL ONLY
SW300060-EVAL LIBRARY ACOUSTIC ECHO-EVAL ONLY
相关代理商/技术参数
参数描述
SW006013 制造商:Microchip Technology Inc 功能描述:MPLAB C Compiler for dsPIC DSCs
SW006014 功能描述:开发软件 C Compiler for PIC24 MCU RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
SW006015 功能描述:开发软件 MPLAB C32 C Compiler RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
SW006021-1 制造商:Microchip Technology 功能描述:MPLAB XC8 STANDARD COMPILER 制造商:Microchip Technology Inc 功能描述:COMPILER MPLAB XC8 STD 制造商:Microchip Technology Inc 功能描述:COMPILER MPLAB XC8 STANDARD 制造商:Microchip Technology Inc 功能描述:COMPILER, MPLAB XC8, STANDARD 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 ANSI C Compiler for the PIC10 (12),(16),(18) (Workstation License) 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 Standard Compiler 制造商:Microchip Technology Inc 功能描述:OPTOCOUPLERS; Core Architecture:PIC; Software Edition:Standard
SW006021-1N 制造商:Microchip Technology 功能描述:MPLAB XC8 STANDARD COMPILER (F 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 STANDARD COMPILER (FLOATING LICENSE) - Boxed Product (Development Kits) 制造商:Microchip Technology Inc 功能描述:COMPILER MPLAB XC8 STD FLOAT LIC 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 Standard Compiler (Fltng Lic)