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Bugfix/issue 1179 exponential lower bound check #1469

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merged 8 commits into from
Jun 5, 2015
Merged

Bugfix/issue 1179 exponential lower bound check #1469

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63271b6
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
rtrangucci May 6, 2015
56035f9
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
rtrangucci May 13, 2015
1df6630
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
rtrangucci May 14, 2015
75bef68
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
rtrangucci May 27, 2015
2b2c34b
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
rtrangucci May 30, 2015
8dd47da
b b/i-1179 added check_nonnegative call on y
rtrangucci Jun 1, 2015
01a281d
b b/i-1179 rm tabs
rtrangucci Jun 1, 2015
1b90a57
b f/i-1179 Added valid value test and invalid value test
rtrangucci Jun 3, 2015
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2 changes: 1 addition & 1 deletion src/stan/math/prim/scal/prob/exponential_log.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,7 @@ namespace stan {
using std::log;

T_partials_return logp(0.0);
check_not_nan(function, "Random variable", y);
check_nonnegative(function, "Random variable", y);
check_positive_finite(function, "Inverse scale parameter", beta);
check_consistent_sizes(function,
"Random variable", y,
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10 changes: 10 additions & 0 deletions src/test/prob/exponential/exponential_test.hpp
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Expand Up @@ -23,11 +23,21 @@ class AgradDistributionsExponential : public AgradDistributionTest {
param[1] = 3.9; // beta
parameters.push_back(param);
log_prob.push_back(-57.13902344686439249699); // expected log_prob

param[0] = 1e-08;
param[1] = 3.9;
parameters.push_back(param);
log_prob.push_back(1.3609765141356007);
}

void invalid_values(vector<size_t>& index,
vector<double>& value) {
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Add a test on the boundary where y = 0.

// y
index.push_back(0U);
value.push_back(-10.0);

index.push_back(0U);
value.push_back(numeric_limits<double>::quiet_NaN());

// beta
index.push_back(1U);
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