def test_gradient_C_extension(self):
from anuga.utilities.util_ext import gradient as gradient_c
x0 = 2.0/3; y0 = 2.0/3
x1= 8.0/3; y1 = 2.0/3
x2 = 2.0/3; y2 = 8.0/3
q0 = 2.0+2.0/3
q1 = 8.0+2.0/3
q2 = 2.0+8.0/3
#Gradient of fitted pwl surface
a, b = gradient_c(x0, y0, x1, y1, x2, y2, q0, q1, q2)
assert abs(a - 3.0) < epsilon
assert abs(b - 1.0) < epsilon
def test_gradient_C_extension(self):
from anuga.utilities.util_ext import gradient as gradient_c
x0 = 2.0 / 3
y0 = 2.0 / 3
x1 = 8.0 / 3
y1 = 2.0 / 3
x2 = 2.0 / 3
y2 = 8.0 / 3
q0 = 2.0 + 2.0 / 3
q1 = 8.0 + 2.0 / 3
q2 = 2.0 + 8.0 / 3
#Gradient of fitted pwl surface
a, b = gradient_c(x0, y0, x1, y1, x2, y2, q0, q1, q2)
assert abs(a - 3.0) < epsilon
assert abs(b - 1.0) < epsilon
def test_gradient_C_extension3(self):
from anuga.utilities.util_ext import gradient as gradient_c
seed((17, 53))
x0, x1, x2, y0, y1, y2 = uniform(0.0, 3.0, 6)
q0 = uniform(0.0, 10.0, 4)
q1 = uniform(1.0, 3.0, 4)
q2 = uniform(7.0, 20.0, 4)
for i in range(4):
#Gradient of fitted pwl surface
a_ref, b_ref = gradient_python(x0, y0, x1, y1, x2, y2, q0[i],
q1[i], q2[i])
#print a_ref, b_ref
a, b = gradient_c(x0, y0, x1, y1, x2, y2, q0[i], q1[i], q2[i])
#print a, a_ref, b, b_ref
assert abs(a - a_ref) < epsilon
assert abs(b - b_ref) < epsilon
def test_gradient_C_extension3(self):
from anuga.utilities.util_ext import gradient as gradient_c
seed((17, 53))
x0, x1, x2, y0, y1, y2 = uniform(0.0,3.0,6)
q0 = uniform(0.0, 10.0, 4)
q1 = uniform(1.0, 3.0, 4)
q2 = uniform(7.0, 20.0, 4)
for i in range(4):
#Gradient of fitted pwl surface
a_ref, b_ref = gradient_python(x0, y0, x1, y1, x2, y2,
q0[i], q1[i], q2[i])
#print a_ref, b_ref
a, b = gradient_c(x0, y0, x1, y1, x2, y2,
q0[i], q1[i], q2[i])
#print a, a_ref, b, b_ref
assert abs(a - a_ref) < epsilon
assert abs(b - b_ref) < epsilon
