SW006015 Microchip Technology, SW006015 Datasheet - Page 97

• Manufacturer Part Number: SW006015
• Description: C COMPILER MPLAB C32
• Manufacturer: Microchip Technology
• Type: Compilerr
• Series: PIC32r

Specifications of SW006015

• Supported Families: PIC32MX5, MX6, And MX7
• Core Architecture: PIC
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC32 MCUs
• Tool Function: Compiler
• Supported Devices: PIC32 MCUs
• Tool Type: Compiler
• Processor Series: PIC32
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: PIC32
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

A.11 HINTS
A.12 STRUCTURES, UNIONS, ENUMERATIONS, AND BIT-FIELDS
© 2007 Microchip Technology Inc.
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“The size of the result of subtracting two pointers to elements of
the same array (C90 6.3.6, C99 6.5.6).”
32 bit signed integer.
“The extent to which suggestions made by using the register
storage-class specifier are effective (C90 6.5.1, C99 6.7.1).”
The register storage class specifier generally has no effect.
“The extent to which suggestions made by using the inline function
specifier are effective (C99 6.7.4).”
If -fno-inline or -O0 are specified, no functions will be inlined,
even if specified with the inline specifier. Otherwise, the
function may or may not be inlined dependent on the optimization
heuristics of the compiler.
“A member of a union object is accessed using a member of a
different type (C90 6.3.2.3).”
The corresponding bytes of the union object are interpreted as an
object of the type of the member being accessed without regard
for alignment or other possible invalid conditions.
“Whether a “plain” int bit-field is treated as a signed int bit-field or
as an unsigned int bit-field (C90 6.5.2, C90 6.5.2.1, C99 6.7.2, C99
6.7.2.1).”
By default, a plain int bit-field is treated as a signed integer. This
behavior can be altered by use of the -funsigned-bitfields
command line option.
“Allowable bit-field types other than _Bool, signed int, and
unsigned int (C99 6.7.2.1).”
No other types are supported.
“Whether a bit-field can straddle a storage-unit boundary (C90
6.5.2.1, C99 6.7.2.1).”
No.
“The order of allocation of bit-fields within a unit (C90 6.5.2.1, C99
6.7.2.1).”
Bit-fields are allocated left to right.
“The alignment of non-bit-field members of structures (C90
6.5.2.1, C99 6.7.2.1).”
DS51686A-page 93