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Commit 5663a609 authored by Martin Reinecke's avatar Martin Reinecke
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PEP8

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test.py
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......@@ -7,150 +7,192 @@ from numpy.testing import assert_
pmp = pytest.mark.parametrize
shapes1D = ((10,), (127,))
shapes2D = ((128, 128), (128, 129), (1, 129), (129,1))
shapes3D = ((32,17,39),)
shapes2D = ((128, 128), (128, 129), (1, 129), (129, 1))
shapes3D = ((32, 17, 39),)
shapes = shapes1D+shapes2D+shapes3D
len1D=range(1,2048)
len1D = range(1, 2048)
def _l2error(a,b):
def _l2error(a, b):
return np.sqrt(np.sum(np.abs(a-b)**2)/np.sum(np.abs(a)**2))
def fftn(a, axes=None, inorm=0, out=None, nthreads=1):
return pypocketfft.c2c(a, axes=axes, forward=True, inorm=inorm,
out=out, nthreads=nthreads)
def ifftn(a, axes=None, inorm=0, out=None, nthreads=1):
return pypocketfft.c2c(a, axes=axes, forward=False, inorm=inorm,
out=out, nthreads=nthreads)
def rfftn(a, axes=None, inorm=0, nthreads=1):
return pypocketfft.r2c(a, axes=axes, forward=True, inorm=inorm,
nthreads=nthreads)
def irfftn(a, axes=None, lastsize=0, inorm=0, nthreads=1):
return pypocketfft.c2r(a, axes=axes, lastsize=lastsize,forward=False,
return pypocketfft.c2r(a, axes=axes, lastsize=lastsize, forward=False,
inorm=inorm, nthreads=nthreads)
def rfft_scipy(a, axis, inorm=0, out=None, nthreads=1):
return pypocketfft.r2r_fftpack(a, axes=(axis,), r2hc=True,
forward=True, inorm=inorm, out=out,
nthreads=nthreads)
def irfft_scipy(a, axis, inorm=0, out=None, nthreads=1):
return pypocketfft.r2r_fftpack(a, axes=(axis,), r2hc=False,
forward=False, inorm=inorm, out=out,
nthreads=nthreads)
@pmp("len", len1D)
@pmp("inorm", [0,1,2])
@pmp("inorm", [0, 1, 2])
def test1D(len, inorm):
a=np.random.rand(len)-0.5 + 1j*np.random.rand(len)-0.5j
b=a.astype(np.complex64)
c=a.astype(np.complex256)
assert_(_l2error(a, ifftn(fftn(c,inorm=inorm), inorm=2-inorm))<1e-18)
assert_(_l2error(a, ifftn(fftn(a,inorm=inorm), inorm=2-inorm))<1.5e-15)
assert_(_l2error(a.real, ifftn(fftn(a.real,inorm=inorm), inorm=2-inorm))<1.5e-15)
assert_(_l2error(a.real, fftn(ifftn(a.real,inorm=inorm), inorm=2-inorm))<1.5e-15)
assert_(_l2error(a.real, irfftn(rfftn(a.real,inorm=inorm), inorm=2-inorm,lastsize=len))<1.5e-15)
tmp=a.copy()
assert_ (ifftn(fftn(tmp, out=tmp, inorm=inorm), out=tmp, inorm=2-inorm) is tmp)
assert_(_l2error(tmp, a)<1.5e-15)
assert_(_l2error(b, ifftn(fftn(b, inorm=inorm), inorm=2-inorm))<6e-7)
assert_(_l2error(b.real, ifftn(fftn(b.real,inorm=inorm), inorm=2-inorm))<6e-7)
assert_(_l2error(b.real, fftn(ifftn(b.real,inorm=inorm), inorm=2-inorm))<6e-7)
assert_(_l2error(b.real, irfftn(rfftn(b.real, inorm=inorm), lastsize=len, inorm=2-inorm))<6e-7)
tmp=b.copy()
assert_ (ifftn(fftn(tmp, out=tmp, inorm=inorm), out=tmp, inorm=2-inorm) is tmp)
assert_(_l2error(tmp, b)<6e-7)
a = np.random.rand(len)-0.5 + 1j*np.random.rand(len)-0.5j
b = a.astype(np.complex64)
c = a.astype(np.complex256)
assert_(_l2error(a, ifftn(fftn(c, inorm=inorm), inorm=2-inorm)) < 1e-18)
assert_(_l2error(a, ifftn(fftn(a, inorm=inorm), inorm=2-inorm)) < 1.5e-15)
assert_(_l2error(a.real, ifftn(fftn(a.real, inorm=inorm), inorm=2-inorm))
< 1.5e-15)
assert_(_l2error(a.real, fftn(ifftn(a.real, inorm=inorm), inorm=2-inorm))
< 1.5e-15)
assert_(_l2error(a.real, irfftn(rfftn(a.real, inorm=inorm),
inorm=2-inorm, lastsize=len)) < 1.5e-15)
tmp = a.copy()
assert_(ifftn(fftn(tmp, out=tmp, inorm=inorm), out=tmp, inorm=2-inorm)
is tmp)
assert_(_l2error(tmp, a) < 1.5e-15)
assert_(_l2error(b, ifftn(fftn(b, inorm=inorm), inorm=2-inorm)) < 6e-7)
assert_(_l2error(b.real, ifftn(fftn(b.real, inorm=inorm), inorm=2-inorm))
< 6e-7)
assert_(_l2error(b.real, fftn(ifftn(b.real, inorm=inorm), inorm=2-inorm))
< 6e-7)
assert_(_l2error(b.real, irfftn(rfftn(b.real, inorm=inorm), lastsize=len,
inorm=2-inorm)) < 6e-7)
tmp = b.copy()
assert_(ifftn(fftn(tmp, out=tmp, inorm=inorm), out=tmp, inorm=2-inorm)
is tmp)
assert_(_l2error(tmp, b) < 6e-7)
@pmp("shp", shapes)
@pmp("nthreads", (0,1,2))
@pmp("nthreads", (0, 1, 2))
def test_fftn(shp, nthreads):
a=np.random.rand(*shp)-0.5 + 1j*np.random.rand(*shp)-0.5j
assert_(_l2error(pyfftw.interfaces.numpy_fft.fftn(a), fftn(a, nthreads=nthreads))<1e-15)
a=a.astype(np.complex64)
assert_(_l2error(pyfftw.interfaces.numpy_fft.fftn(a), fftn(a, nthreads=nthreads))<5e-7)
a = np.random.rand(*shp)-0.5 + 1j*np.random.rand(*shp)-0.5j
assert_(_l2error(pyfftw.interfaces.numpy_fft.fftn(a),
fftn(a, nthreads=nthreads)) < 1e-15)
a = a.astype(np.complex64)
assert_(_l2error(pyfftw.interfaces.numpy_fft.fftn(a),
fftn(a, nthreads=nthreads)) < 5e-7)
@pmp("shp", shapes2D)
@pmp("axes", ((0,),(1,),(0,1),(1,0)))
@pmp("axes", ((0,), (1,), (0, 1), (1, 0)))
def test_fftn2D(shp, axes):
a=np.random.rand(*shp)-0.5 + 1j*np.random.rand(*shp)-0.5j
assert_(_l2error(pyfftw.interfaces.numpy_fft.fftn(a, axes=axes), fftn(a, axes=axes))<1e-15)
a=a.astype(np.complex64)
assert_(_l2error(pyfftw.interfaces.numpy_fft.fftn(a, axes=axes), fftn(a, axes=axes))<5e-7)
a = np.random.rand(*shp)-0.5 + 1j*np.random.rand(*shp)-0.5j
assert_(_l2error(pyfftw.interfaces.numpy_fft.fftn(a, axes=axes),
fftn(a, axes=axes)) < 1e-15)
a = a.astype(np.complex64)
assert_(_l2error(pyfftw.interfaces.numpy_fft.fftn(a, axes=axes),
fftn(a, axes=axes)) < 5e-7)
@pmp("shp", shapes)
def test_rfftn(shp):
a=np.random.rand(*shp)-0.5
assert_(_l2error(pyfftw.interfaces.numpy_fft.rfftn(a), rfftn(a))<1e-15)
a=a.astype(np.float32)
assert_(_l2error(pyfftw.interfaces.numpy_fft.rfftn(a), rfftn(a))<5e-7)
a = np.random.rand(*shp)-0.5
assert_(_l2error(pyfftw.interfaces.numpy_fft.rfftn(a), rfftn(a)) < 1e-15)
a = a.astype(np.float32)
assert_(_l2error(pyfftw.interfaces.numpy_fft.rfftn(a), rfftn(a)) < 5e-7)
@pmp("shp", shapes)
def test_rfft_scipy(shp):
for i in range(len(shp)):
a=np.random.rand(*shp)-0.5
assert_(_l2error(pyfftw.interfaces.scipy_fftpack.rfft(a,axis=i), rfft_scipy(a,axis=i))<1e-15)
assert_(_l2error(pyfftw.interfaces.scipy_fftpack.irfft(a,axis=i), irfft_scipy(a,axis=i,inorm=2))<1e-15)
a = np.random.rand(*shp)-0.5
assert_(_l2error(pyfftw.interfaces.scipy_fftpack.rfft(a, axis=i),
rfft_scipy(a, axis=i)) < 1e-15)
assert_(_l2error(pyfftw.interfaces.scipy_fftpack.irfft(a, axis=i),
irfft_scipy(a, axis=i, inorm=2)) < 1e-15)
@pmp("shp", shapes2D)
@pmp("axes", ((0,),(1,),(0,1),(1,0)))
@pmp("axes", ((0,), (1,), (0, 1), (1, 0)))
def test_rfftn2D(shp, axes):
a=np.random.rand(*shp)-0.5
assert_(_l2error(pyfftw.interfaces.numpy_fft.rfftn(a, axes=axes), rfftn(a, axes=axes))<1e-15)
a=a.astype(np.float32)
assert_(_l2error(pyfftw.interfaces.numpy_fft.rfftn(a, axes=axes), rfftn(a, axes=axes))<5e-7)
a = np.random.rand(*shp)-0.5
assert_(_l2error(pyfftw.interfaces.numpy_fft.rfftn(a, axes=axes),
rfftn(a, axes=axes)) < 1e-15)
a = a.astype(np.float32)
assert_(_l2error(pyfftw.interfaces.numpy_fft.rfftn(a, axes=axes),
rfftn(a, axes=axes)) < 5e-7)
@pmp("shp", shapes)
def test_identity(shp):
a=np.random.rand(*shp)-0.5 + 1j*np.random.rand(*shp)-0.5j
assert_(_l2error(ifftn(fftn(a),inorm=2), a)<1.5e-15)
assert_(_l2error(ifftn(fftn(a.real),inorm=2), a.real)<1.5e-15)
assert_(_l2error(fftn(ifftn(a.real),inorm=2), a.real)<1.5e-15)
tmp=a.copy()
assert_ (ifftn(fftn(tmp, out=tmp), inorm=2, out=tmp) is tmp)
assert_(_l2error(tmp, a)<1.5e-15)
a=a.astype(np.complex64)
assert_(_l2error(ifftn(fftn(a),inorm=2), a)<6e-7)
a = np.random.rand(*shp)-0.5 + 1j*np.random.rand(*shp)-0.5j
assert_(_l2error(ifftn(fftn(a), inorm=2), a) < 1.5e-15)
assert_(_l2error(ifftn(fftn(a.real), inorm=2), a.real) < 1.5e-15)
assert_(_l2error(fftn(ifftn(a.real), inorm=2), a.real) < 1.5e-15)
tmp = a.copy()
assert_(ifftn(fftn(tmp, out=tmp), inorm=2, out=tmp) is tmp)
assert_(_l2error(tmp, a) < 1.5e-15)
a = a.astype(np.complex64)
assert_(_l2error(ifftn(fftn(a), inorm=2), a) < 6e-7)
@pmp("shp", shapes)
def test_identity_r(shp):
a=np.random.rand(*shp)-0.5
b=a.astype(np.float32)
a = np.random.rand(*shp)-0.5
b = a.astype(np.float32)
for ax in range(a.ndim):
n = a.shape[ax]
assert_(_l2error(irfftn(rfftn(a,(ax,)),(ax,),lastsize=n,inorm=2), a)<1e-15)
assert_(_l2error(irfftn(rfftn(b,(ax,)),(ax,),lastsize=n,inorm=2), b)<5e-7)
assert_(_l2error(irfftn(rfftn(a, (ax,)), (ax,), lastsize=n, inorm=2),
a) < 1e-15)
assert_(_l2error(irfftn(rfftn(b, (ax,)), (ax,), lastsize=n, inorm=2),
b) < 5e-7)
@pmp("shp", shapes)
def test_identity_r2(shp):
a=np.random.rand(*shp)-0.5 + 1j*np.random.rand(*shp)-0.5j
a=rfftn(irfftn(a))
assert_(_l2error(rfftn(irfftn(a),inorm=2), a)<1e-15)
a = np.random.rand(*shp)-0.5 + 1j*np.random.rand(*shp)-0.5j
a = rfftn(irfftn(a))
assert_(_l2error(rfftn(irfftn(a), inorm=2), a) < 1e-15)
@pmp("shp", shapes2D+shapes3D)
def test_genuine_hartley(shp):
a=np.random.rand(*shp)-0.5
a = np.random.rand(*shp)-0.5
v1 = pypocketfft.genuine_hartley(a)
v2 = fftn(a.astype(np.complex128))
v2 = v2.real+v2.imag
assert_(_l2error(v1, v2)<1e-15)
assert_(_l2error(v1, v2) < 1e-15)
@pmp("shp", shapes)
def test_hartley_identity(shp):
a=np.random.rand(*shp)-0.5
a = np.random.rand(*shp)-0.5
v1 = pypocketfft.separable_hartley(pypocketfft.separable_hartley(a))/a.size
assert_(_l2error(a, v1)<1e-15)
assert_(_l2error(a, v1) < 1e-15)
@pmp("shp", shapes)
def test_genuine_hartley_identity(shp):
a=np.random.rand(*shp)-0.5
a = np.random.rand(*shp)-0.5
v1 = pypocketfft.genuine_hartley(pypocketfft.genuine_hartley(a))/a.size
assert_(_l2error(a, v1)<1e-15)
assert_(_l2error(a, v1) < 1e-15)
v1 = a.copy()
assert_(pypocketfft.genuine_hartley(pypocketfft.genuine_hartley(v1, out=v1), inorm=2, out=v1) is v1)
assert_(_l2error(a, v1)<1e-15)
assert_(pypocketfft.genuine_hartley(
pypocketfft.genuine_hartley(v1, out=v1), inorm=2, out=v1) is v1)
assert_(_l2error(a, v1) < 1e-15)
@pmp("shp", shapes2D)
@pmp("axes", ((0,),(1,),(0,1),(1,0)))
@pmp("axes", ((0,), (1,), (0, 1), (1, 0)))
def test_genuine_hartley_2D(shp, axes):
a=np.random.rand(*shp)-0.5
assert_(_l2error(pypocketfft.genuine_hartley(pypocketfft.genuine_hartley(a, axes=axes), axes=axes, inorm=2),a)<1e-15)
a = np.random.rand(*shp)-0.5
assert_(_l2error(pypocketfft.genuine_hartley(pypocketfft.genuine_hartley(
a, axes=axes), axes=axes, inorm=2), a) < 1e-15)
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