Adding missing files

jussienko · jussienko · commit 6d062cf8e7dd · 2018-01-30T11:00:57.000+02:00
diff --git a/cython/heat-equation/bottle.dat b/cython/heat-equation/bottle.dat
@@ -0,0 +1 @@
+../../numpy/heat-equation/bottle.dat
diff --git a/cython/heat-equation/bottle_large.dat b/cython/heat-equation/bottle_large.dat
@@ -0,0 +1 @@
+../../numpy/heat-equation/bottle_large.dat
diff --git a/cython/heat-equation/bottle_medium.dat b/cython/heat-equation/bottle_medium.dat
@@ -0,0 +1 @@
+../../numpy/heat-equation/bottle_medium.dat
diff --git a/cython/heat-equation/evolve.py b/cython/heat-equation/evolve.py
@@ -0,0 +1,20 @@
+import numpy as np
+
+def evolve(u, u_previous, a, dt, dx2, dy2):
+    """Explicit time evolution.
+       u:            new temperature field
+       u_previous:   previous field
+       a:            diffusion constant
+       dt:           time step. """
+
+    n, m = u.shape
+
+    for i in range(1, n-1):
+        for j in range(1, m-1):
+            u[i, j] = u_previous[i, j] + a * dt * ( \
+             (u_previous[i+1, j] - 2*u_previous[i, j] + \
+              u_previous[i-1, j]) / dx2 + \
+             (u_previous[i, j+1] - 2*u_previous[i, j] + \
+                 u_previous[i, j-1]) / dy2 )
+    u_previous[:] = u[:]
+
diff --git a/demos/cython/mandel_main.py b/demos/cython/mandel_main.py

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+../../numpy/heat-equation/bottle_large.dat`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+../../numpy/heat-equation/bottle_medium.dat`