Stan Math Library
2.15.0
reverse mode automatic differentiation
stan
math
prim
scal
meta
likely.hpp
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#ifndef STAN_MATH_PRIM_SCAL_META_LIKELY_HPP
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#define STAN_MATH_PRIM_SCAL_META_LIKELY_HPP
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#ifdef __GNUC__
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#else
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#define likely(x) (x)
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#define unlikely(x) (x)
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#endif
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#endif
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