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243480b515
C99's "{ 0 }" notation for filling in a struct with all zeros was not
included in the C++11 standard, so gcc doesn't implement it and neither
does clang.
gcc does (did?) have issues with warnings on the same code in C99,
complaining about uninitialized struct members when "{0}" explicitly
initializes every member to a zero value. These issues don't apply in
the C++ code where NTOA_TABLE_ENTRY_END is used.
Signed-off-by: Zygo Blaxell <bees@furryterror.org>
29 lines
737 B
C++
29 lines
737 B
C++
#ifndef CRUCIBLE_NTOA_H
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#define CRUCIBLE_NTOA_H
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#include <string>
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namespace crucible {
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using namespace std;
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struct bits_ntoa_table {
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unsigned long long n;
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unsigned long long mask;
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const char *a;
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};
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string bits_ntoa(unsigned long long n, const bits_ntoa_table *a);
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};
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// Combinations of bits (list multiple-bit entries first)
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#define NTOA_TABLE_ENTRY_BITS(x) { .n = (x), .mask = (x), .a = (#x) }
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// Enumerations (entire value matches all bits)
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#define NTOA_TABLE_ENTRY_ENUM(x) { .n = (x), .mask = ~0UL, .a = (#x) }
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// End of table (sorry, C++ didn't get C99's compound literals, so we have to write out all the member names)
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#define NTOA_TABLE_ENTRY_END() { .n = 0, .mask = 0, .a = nullptr }
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#endif // CRUCIBLE_NTOA_H
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