Add TriangularRV

aesara/tensor/random/basic.py

@@ -31,6 +31,17 @@ class UniformRV(RandomVariable):
 uniform = UniformRV()
 
 
+class TriangularRV(RandomVariable):
+    name = "triangular"
+    ndim_supp = 0
+    ndims_params = [0, 0, 0]
+    dtype = "floatX"
+    _print_name = ("Triang", "\\operatorname{Triang}")
+
+
+triangular = TriangularRV()
+
+
 class BetaRV(RandomVariable):
     name = "beta"
     ndim_supp = 0

tests/tensor/random/test_basic.py

@@ -40,6 +40,7 @@ from aesara.tensor.random.basic import (
     poisson,
     polyagamma,
     randint,
+    triangular,
     truncexpon,
     uniform,
     wald,
@@ -102,6 +103,15 @@ def test_uniform_samples():
     rv_numpy_tester(uniform, test_low, test_high, size=[3])
 
 
+def test_triangular_samples():
+    test_left = np.array(10, dtype=config.floatX)
+    test_mode = np.array(12, dtype=config.floatX)
+    test_right = np.array(20, dtype=config.floatX)
+
+    rv_numpy_tester(triangular, test_left, test_mode, test_right)
+    rv_numpy_tester(triangular, test_left, test_mode, test_right, size=[2, 3])
+
+
 def test_beta_samples():
 
     test_a = np.array(0.5, dtype=config.floatX)