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pbrod 9 years ago
parent 858f513111
commit 4fc5a1fec4
1 changed files with 8 additions and 8 deletions
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16
wafo/integrate.py
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@ -1070,17 +1070,17 @@ class _Quadgr(object):
# Change of variable # Change of variable
if np.isfinite(a) & np.isinf(b): if np.isfinite(a) & np.isinf(b):
# a to inf # a to inf
[Q, err] = quadgr(lambda t: fun(a + t / (1 - t)) / (1 - t) ** 2, Q, err = quadgr(lambda t: fun(a + t / (1 - t)) / (1 - t) ** 2,
0, 1, abseps) 0, 1, abseps)
elif np.isinf(a) & np.isfinite(b): elif np.isinf(a) & np.isfinite(b):
# -inf to b # -inf to b
[Q, err] = quadgr(lambda t: fun(b + t / (1 + t)) / (1 + t) ** 2, Q, err = quadgr(lambda t: fun(b + t / (1 + t)) / (1 + t) ** 2,
-1, 0, abseps) -1, 0, abseps)
else: # -inf to inf else: # -inf to inf
[Q1, err1] = quadgr(lambda t: fun(t / (1 - t)) / (1 - t) ** 2, Q1, err1 = quadgr(lambda t: fun(t / (1 - t)) / (1 - t) ** 2,
0, 1, abseps / 2) 0, 1, abseps / 2)
[Q2, err2] = quadgr(lambda t: fun(t / (1 + t)) / (1 + t) ** 2, Q2, err2 = quadgr(lambda t: fun(t / (1 + t)) / (1 + t) ** 2,
-1, 0, abseps / 2) -1, 0, abseps / 2)
Q = Q1 + Q2 Q = Q1 + Q2
err = err1 + err2 err = err1 + err2

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