MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

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16-Bit C Compiler User’s Guide A.3 TRANSLATION A.4 ENVIRONMENT Implementation-Defined Behavior for Translation is covered in section G.3.1 of the ANSI C Standard. Is each non-empty sequence of white-space characters, other than new line, retained or is it replaced by one space character? (ISO 5.1.1.2) It is replaced by one space character. How is a diagnostic message identified? (ISO 5.1.1.3) Diagnostic messages are identified by prefixing them with the source file name and line number corresponding to the message, separated by colon characters (‘:’). Are there different classes of message? (ISO 5.1.1.3) Yes. If yes, what are they? (ISO 5.1.1.3) Errors, which inhibit production of an output file, and warnings, which do not inhibit production of an output file. What is the translator return status code for each class of message? (ISO 5.1.1.3) The return status code for errors is 1; for warnings it is 0. Can a level of diagnostic be controlled? (ISO 5.1.1.3) Yes. If yes, what form does the control take? (ISO 5.1.1.3) Compiler command line options may be used to request or inhibit the generation of warning messages. Implementation-Defined Behavior for Environment is covered in section G.3.2 of the ANSI C Standard. What library facilities are available to a freestanding program? (ISO 5.1.2.1) All of the facilities of the standard C library are available, provided that a small set of functions is customized for the environment, as described in the “Run Time Libraries” section. Describe program termination in a freestanding environment. (ISO 5.1.2.1) If the function main returns or the function exit is called, a HALT instruction is executed in an infinite loop. This behavior is customizable. Describe the arguments (parameters) passed to the function main? (ISO 5.1.2.2.1) No parameters are passed to main. Which of the following is a valid interactive device: (ISO 5.1.2.3) Asynchronous terminalNo Paired display and keyboardNo Inter program connectionNo Other, please describe?None DS51284H-page 130 © 2008 Microchip Technology Inc.
A.5 IDENTIFIERS A.6 CHARACTERS Implementation-Defined Behavior Implementation-Defined Behavior for Identifiers is covered in section G.3.3 of the ANSI C Standard. How many characters beyond thirty-one (31) are significant in an identifier without external linkage? (ISO 6.1.2) All characters are significant. How many characters beyond six (6) are significant in an identifier with external linkage? (ISO 6.1.2) All characters are significant. Is case significant in an identifier with external linkage? (ISO 6.1.2) Yes. Implementation-Defined Behavior for Characters is covered in section G.3.4 of the ANSI C Standard. Detail any source and execution characters which are not explicitly specified by the Standard? (ISO 5.2.1) None. List escape sequence value produced for listed sequences. (ISO 5.2.2) TABLE A-1: ESCAPE SEQUENCE CHARACTERS AND VALUES Sequence Value \a 7 \b 8 \f 12 \n 10 \r 13 \t 9 \v 11 How many bits are in a character in the execution character set? (ISO 5.2.4.2) 8. What is the mapping of members of the source character sets (in character and string literals) to members of the execution character set? (ISO 6.1.3.4) The identity function. What is the equivalent type of a plain char? (ISO 6.2.1.1) Either (user defined). The default is signed char. A compiler command-line option may be used to make the default unsigned char. © 2008 Microchip Technology Inc. DS51284H-page 131
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MPLAB ® C COMPILER FOR PIC24 MCUs
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Table of Contents A.5 Identifiers .
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INTRODUCTION MPLAB ® C COMPILER FO
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CONVENTIONS USED IN THIS GUIDE The
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THE MICROCHIP WEB SITE Preface C Re
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1.1 INTRODUCTION 1.2 HIGHLIGHTS MPL
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1.5 COMPILER FEATURE SET Compiler O
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Differences Between 16-Bit Device C
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Using the Compiler on the Command L
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3.6 ENVIRONMENT VARIABLES Using the
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4.1 INTRODUCTION 4.2 HIGHLIGHTS 4.3
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4.5 MEMORY SPACES Run Time Environm
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Run Time Environment 1. It is possi
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4.8 SOFTWARE STACK Run Time Environ
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FIGURE 4-2: CALL OR RCALL Stack gro
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4.11 FUNCTION CALL CONVENTIONS Run
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Run Time Environment The compiler a
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4.14.2 String Literals as Arguments
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Page 89 and 90: 6.3 PMP POINTERS Additional C Point
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Page 93 and 94: ead_external16 Additional C Pointer
Page 95 and 96: Additional C Pointer Types } else {
Page 99 and 100: 7.5 USING SFRS Device Support Files
Page 101 and 102: 7.6 USING MACROS Device Support Fil
Page 103 and 104: EXAMPLE 7-2: EEDATA ACCESS VIA PSV
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Page 111 and 112: 8.4.3 PIC24F MCUs Interrupt Vectors
Page 113 and 114: Interrupts TABLE 8-3: INTERRUPT VEC
Page 115 and 116: Interrupts TABLE 8-4: INTERRUPT VEC
Page 117 and 118: 85 _Interrupt85 _AltInterrupt85 Res
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Page 143 and 144: A.17 SIGNALS A.18 STREAMS AND FILES
Page 145 and 146: A.24 GETENV A.25 SYSTEM A.26 STRERR
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Page 149 and 150: __builtin_btg Built-in Functions De
Page 151 and 152: __builtin_clr_prefetch Argument: xp
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Page 155 and 156: __builtin_fbcl Built-in Functions A
Page 157 and 158: __builtin_modsd Argument: dividend
Page 159 and 160: __builtin_mpy Error Messages An err
Page 161 and 162: __builtin_mulss Built-in Functions
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Page 165 and 166: __builtin_subab Built-in Functions
Page 167 and 168: __builtin_tblwth Built-in Functions
Page 169 and 170: C.1 INTRODUCTION C.2 ERRORS MPLAB
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Page 173 and 174: Diagnostics cast specifies function
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Page 181 and 182: N Diagnostics negative width in bit
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Diagnostics void expression between
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Diagnostics anonymous union declare
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Diagnostics comparison between sign
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duplicate ‘const’ The ‘const
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Diagnostics function might be possi
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Diagnostics ‘identifier’ is nar
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Diagnostics library function ‘ide
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P Diagnostics parameter has incompl
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Diagnostics shift count >= width of
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Diagnostics too many arguments for
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V Diagnostics __VA_ARGS__ can only
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MPLAB C Compiler for PIC18 MCUs vs.
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E.1 INTRODUCTION E.2 HIGHLIGHTS MPL
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G.1 PREAMBLE MPLAB ® C COMPILER FO
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G.3 VERBATIM COPYING G.4 COPYING IN
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GNU Free Documentation License incl
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Glossary File Registers On-chip dat
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Glossary Machine Language A set of
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Glossary Stack, Software Memory use
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Symbols __builtin_add..............
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-fpack-struct .....................
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-idirafter.........................
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Peephole Optimization..............
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-Wsequence-point...................
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MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

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