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Click on a line that starts with a "+" to see the C code that Cython generated for it.

Raw output: lab_xs.c

 01: from libc.math cimport tanh, atanh, sqrt
 02: 
+03: def diff_xs_eta(double e_proton, double charge, double eta, double x_1, double x_2):
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 04:     """Calculates the differential cross section as a function of the
 05:     cosine of the pseudo rapidity eta of one photon in units of 1/GeV².
 06:     Here dΩ=detadφ
 07:     :param e_proton: proton energy per beam [GeV]
 08:     :param charge: charge of the quark
 09:     :param x_1: momentum fraction of the first quark
 10:     :param x_2: momentum fraction of the second quark
 11:     :param eta: pseudo rapidity
 12:     :return: the differential cross section [GeV^{-2}]
 13:     """
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 17:         / (137.036 * e_proton) ** 2
 18:         / (24 * x_1 * x_2)
+19:         * ((tanh(eta - rap)) ** 2 + 1)
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 20:     )
 21: 
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 25:         2
 26:         * e_proton
 27:         * x_1
 28:         * x_2
 29:         / (x_1 + x_2 - (x_1 - x_2) * tanh_eta)
+30:         * sqrt(1 - tanh_eta ** 2)
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 31:     )
 32: 
 33: 
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