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

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16-Bit C Compiler User’s Guide A.16 LIBRARY FUNCTIONS Implementation-Defined Behavior for Library Functions is covered in section G.3.14 of the ANSI C Standard. What is the null pointer constant to which the macro NULL expands? (ISO 7.1.5) 0. How is the diagnostic printed by the assert function recognized, and what is the termination behavior of this function? (ISO 7.2) The assert function prints the file name, line number and test expression, separated by the colon character (‘:’). It then calls the abort function. What characters are tested for by the isalnum, isalpha, iscntrl, islower, isprint and isupper functions? (ISO 7.3.1) TABLE A-5: CHARACTERS TESTED BY IS FUNCTIONS Function Characters tested isalnum One of the letters or digits: isalpha or isdigit. isalpha One of the letters: islower or isupper. iscntrl One of the five standard motion control characters, backspace and alert: \f, \n, \r, \t, \v, \b, \a. islower One of the letters ‘a’ through ‘z’. isprint A graphic character or the space character: isalnum or ispunct or space. isupper One of the letters ‘A’ through ‘Z’. ispunct One of the characters: ! " # % & ' ( ) ; < = > ? [ \ ] * + , - . / : ^ What values are returned by the mathematics functions after a domain errors? (ISO 7.5.1) NaN. Do the mathematics functions set the integer expression errno to the value of the macro ERANGE on underflow range errors? (ISO 7.5.1) Yes. Do you get a domain error or is zero returned when the fmod function has a second argument of zero? (ISO 7.5.6.4) Domain error. DS51284H-page 136 © 2008 Microchip Technology Inc.
A.17 SIGNALS A.18 STREAMS AND FILES Implementation-Defined Behavior What is the set of signals for the signal function? (ISO 7.7.1.1) TABLE A-6: SIGNAL FUNCTION Name Description SIGABRT Abnormal termination. SIGINT Receipt of an interactive attention signal. SIGILL Detection of an invalid function image. SIGFPE An erroneous arithmetic operation. SIGSEGV An invalid access to storage. SIGTERM A termination request sent to the program. Describe the parameters and the usage of each signal recognized by the signal function. (ISO 7.7.1.1) Application defined. Describe the default handling and the handling at program startup for each signal recognized by the signal function? (ISO 7.7.1.1) None. If the equivalent of signal (sig,SIG_DFL) is not executed prior to the call of a signal handler, what blocking of the signal is performed? (ISO 7.7.1.1) None. Is the default handling reset if a SIGILL signal is received by a handler specified to the signal function? (ISO 7.7.1.1) No. Does the last line of a text stream require a terminating new line character? (ISO 7.9.2) No. Do space characters, that are written out to a text stream immediately before a new line character, appear when the stream is read back in? (ISO 7.9.2) Yes. How many null characters may be appended to data written to a binary stream? (ISO 7.9.2) None. Is the file position indicator of an append mode stream initially positioned at the start or end of the file? (ISO 7.9.3) Start. Does a write on a text stream cause the associated file to be truncated beyond that point? (ISO 7.9.3) Application defined. Describe the characteristics of file buffering. (ISO 7.9.3) Fully buffered. Can zero-length file actually exist? (ISO 7.9.3) Yes. © 2008 Microchip Technology Inc. DS51284H-page 137
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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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5.1 INTRODUCTION 5.2 HIGHLIGHTS MPL
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6.1 INTRODUCTION MPLAB ® C COMPILE
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6.3 PMP POINTERS Additional C Point
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Page 95 and 96: Additional C Pointer Types } else {
Page 97 and 98: 7.1 INTRODUCTION 7.2 HIGHLIGHTS MPL
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Page 103 and 104: EXAMPLE 7-2: EEDATA ACCESS VIA PSV
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Page 107 and 108: Interrupts When using the interrupt
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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
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Page 117 and 118: 85 _Interrupt85 _AltInterrupt85 Res
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Page 137 and 138: A.5 IDENTIFIERS A.6 CHARACTERS Impl
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Page 149 and 150: __builtin_btg Built-in Functions De
Page 151 and 152: __builtin_clr_prefetch Argument: xp
Page 153 and 154: __builtin_dmaoffset Built-in Functi
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
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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
Page 171 and 172: Diagnostics ambiguous abbreviation
Page 173 and 174: Diagnostics cast specifies function
Page 175 and 176: F Diagnostics ‘identifier’ fail
Page 177 and 178: Diagnostics initializer for static
Page 179 and 180: Diagnostics invalid use of undefine
Page 181 and 182: N Diagnostics negative width in bit
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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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