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type-props: Avoid a MSVC warning.

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Currently, MSVC complains when you have a macro of the
form TYPE_MAXIMUM(uint64_t) because a part of macro becomes
~(uint64_t)0 << 64 with a warning:

C4293: '<<' : shift count negative or too big, undefined behavior.

This commit makes changes to the macro to prevent that warning.

Suggested-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Gurucharan Shetty
2015-07-17 08:48:23 -07:00
parent ce6f1d1fc5
commit c002791a30
1 changed files with 2 additions and 2 deletions
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4
lib/type-props.h
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@@ -23,10 +23,10 @@
#define TYPE_IS_SIGNED(TYPE) ((TYPE) 1 > (TYPE) -1)
#define TYPE_VALUE_BITS(TYPE) (sizeof(TYPE) * CHAR_BIT - TYPE_IS_SIGNED(TYPE))
#define TYPE_MINIMUM(TYPE) (TYPE_IS_SIGNED(TYPE) \
? ~(TYPE)0 << TYPE_VALUE_BITS(TYPE) \
? ~(TYPE)0 << (sizeof(TYPE) * 8 - 1) \
: 0)
#define TYPE_MAXIMUM(TYPE) (TYPE_IS_SIGNED(TYPE) \
? ~(~(TYPE)0 << TYPE_VALUE_BITS(TYPE)) \
? ~(~(TYPE)0 << (sizeof(TYPE) * 8 - 1)) \
: (TYPE)-1)
/* Number of decimal digits required to format an integer of the given TYPE.