MPLAB ? C32 C Compiler User’s Guide
Implementation:
ISO Standard:
Implementation:
ISO Standard:
Implementation:
ISO Standard:
Implementation:
ISO Standard:
Implementation:
ISO Standard:
Implementation:
ISO Standard:
Implementation:
ISO Standard:
Implementation:
C99 Annex F is followed.
“How the nearest representable value or the larger or smaller
representable value immediately adjacent to the nearest
representable value is chosen for certain floating constants (C90
6.1.3.1, C99 6.4.4.2).”
C99 Annex F is followed.
“Whether and how floating expressions are contracted when not
disallowed by the FP_CONTRACT pragma (C99 6.5).”
The pragma is not implemented.
“The default state for the FENV_ACCESS pragma (C99 7.6.1).”
This pragma is not implemented.
“Additional floating-point exceptions, rounding modes,
environments, and classifications, and their macro names (C99
7.6, 7.12).”
None supported.
“The default state for the FP_CONTRACT pragma (C99 7.12.2).”
This pragma is not implemented.
“Whether the “inexact” floating-point exception can be raised
when the rounded result actually does equal the mathematical
result in an IEC 60559 conformant implementation (C99 F.9).”
Unknown.
“Whether the “underflow” (and “inexact”) floating-point exception
can be raised when a result is tiny but not inexact in an IEC 60559
conformant implementation (C99 F.9).”
Unknown.
A.10 ARRAYS AND POINTERS
DS51686A-page 92
ISO Standard:
Implementation:
“The result of converting a pointer to an integer or vice versa (C90
6.3.4, C99 6.3.2.3).”
A cast from an integer to a pointer or vice versa results uses the
binary representation of the source type, reinterpreted as
appropriate for the destination type.
If the source type is larger than the destination type, the most
significant bits are discarded. When casting from a pointer to an
integer, if the source type is smaller than the destination type, the
result is sign extended. When casting from an integer to a pointer,
if the source type is smaller than the destination type, the result is
extended base don the signedness of the source type.
? 2007 Microchip Technology Inc.
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