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2.8.0
reverse mode automatic differentiation
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stan
math
prim
scal
fun
multiply_log.hpp
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#ifndef STAN_MATH_PRIM_SCAL_FUN_MULTIPLY_LOG_HPP
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#define STAN_MATH_PRIM_SCAL_FUN_MULTIPLY_LOG_HPP
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#include <boost/math/tools/promotion.hpp>
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namespace
stan {
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namespace
math {
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template
<
typename
T_a,
typename
T_b>
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inline
typename
boost::math::tools::promote_args<T_a, T_b>::type
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multiply_log
(
const
T_a a,
const
T_b b) {
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using
std::log
;
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if
(b == 0.0 && a == 0.0)
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return
0.0;
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return
a *
log
(b);
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}
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}
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}
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#endif
stan::math::log
fvar< T > log(const fvar< T > &x)
Definition:
log.hpp:15
stan::math::multiply_log
fvar< T > multiply_log(const fvar< T > &x1, const fvar< T > &x2)
Definition:
multiply_log.hpp:15
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