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@ -232,15 +232,20 @@ typedef intptr_t ssize_t;
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#define b48(x) (((((x)&0x0000000000ff) << 40) | (((x)&0x00000000ff00) << 24) | (((x)&0x000000ff0000) << 8) | (((x)&0x0000ff000000) >> 8) | (((x)&0x00ff00000000) >> 24) | (((x)&0xff0000000000) >> 40)))
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#define b64(x) __builtin_bswap64(x)
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#define O0 __attribute__((optimize("O0")))
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#define O1 __attribute__((optimize("O1")))
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#define O2 __attribute__((optimize("O2")))
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#define O3 __attribute__((optimize("O3")))
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#define Os __attribute__((optimize("Os")))
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#define Ofast __attribute__((optimize("Ofast")))
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/* https://gcc.gnu.org/onlinedocs/gcc-9.5.0/gnat_ugn/Optimization-Levels.html */
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/** @brief dbg */
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#define OPTMZ O0
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/** @brief No optimization (the default); generates unoptimized code but has the fastest compilation time. */
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#define O0 __attribute__((optimize("O0")))
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/** @brief Moderate optimization; optimizes reasonably well but does not degrade compilation time significantly. */
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#define O1 __attribute__((optimize("O1")))
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/** @brief Full optimization; generates highly optimized code and has the slowest compilation time. */
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#define O2 __attribute__((optimize("O2")))
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/** @brief Full optimization as in -O2; also uses more aggressive automatic inlining of subprograms within a unit (Inlining of Subprograms) and attempts to vectorize loops. */
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#define O3 __attribute__((optimize("O3")))
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/** @brief Optimize space usage (code and data) of resulting program. */
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#define Os __attribute__((optimize("Os")))
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/** @brief Disregard strict standards compliance. -Ofast enables all -O3 optimizations. It also enables optimizations that are not valid for all standard-compliant programs. */
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#define Ofast __attribute__((optimize("Ofast")))
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#define __unused __attribute__((unused))
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#define __packed __attribute__((packed))
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