From 3587d9c4eedfff29b222450970178492c3791130 Mon Sep 17 00:00:00 2001
From: Collin Capano <collin.capano@ligo.org>
Date: Wed, 26 Aug 2020 14:52:19 +0200
Subject: [PATCH 1/2] register the new function

---
 pycbc/conversions.py | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/pycbc/conversions.py b/pycbc/conversions.py
index 83799976fa2..2476c2b179e 100644
--- a/pycbc/conversions.py
+++ b/pycbc/conversions.py
@@ -643,6 +643,27 @@ def dquadmon_from_lambda(lambdav):
     ln_quad_moment = ai + bi*ll + ci*ll**2.0 + di*ll**3.0 + ei*ll**4.0
     return numpy.exp(ln_quad_moment) - 1
 
+
+def spin_from_pulsar_freq(mass, radius, freq):
+    """Returns the dimensionless spin of a pulsar.
+
+    Assumes the pulsar is a solid sphere when computing the moment of inertia.
+
+    Parameters
+    ----------
+    mass : float
+        The mass of the pulsar, in solar masses.
+    radius : float
+        The assumed radius of the pulsar, in kilometers.
+    freq : float
+        The spin frequency of the pulsar, in Hz.
+    """
+    omega = 2 * numpy.pi * freq 
+    mt = mass * lal.MTSUN_SI 
+    I = (2/3.) * mt * (radius * 1000 / lal.C_SI)**2 
+    return I * omega / mt**2 
+
+
 #
 # =============================================================================
 #
@@ -1512,5 +1533,5 @@ def nltides_gw_phase_diff_isco(f_low, f0, amplitude, n, m1, m2):
            'final_mass_from_initial', 'final_spin_from_initial',
            'optimal_dec_from_detector', 'optimal_ra_from_detector',
            'chi_eff_from_spherical', 'chi_p_from_spherical',
-           'nltides_gw_phase_diff_isco',
+           'nltides_gw_phase_diff_isco', 'spin_from_pulsar_freq',
           ]

From 6bd1bcec6d8bc3478f7c55c4cc0c9a39a84999a8 Mon Sep 17 00:00:00 2001
From: Collin Capano <collin.capano@ligo.org>
Date: Wed, 26 Aug 2020 15:20:59 +0200
Subject: [PATCH 2/2] code climate

---
 pycbc/conversions.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/pycbc/conversions.py b/pycbc/conversions.py
index 2476c2b179e..b7507df7c74 100644
--- a/pycbc/conversions.py
+++ b/pycbc/conversions.py
@@ -658,10 +658,10 @@ def spin_from_pulsar_freq(mass, radius, freq):
     freq : float
         The spin frequency of the pulsar, in Hz.
     """
-    omega = 2 * numpy.pi * freq 
-    mt = mass * lal.MTSUN_SI 
-    I = (2/3.) * mt * (radius * 1000 / lal.C_SI)**2 
-    return I * omega / mt**2 
+    omega = 2 * numpy.pi * freq
+    mt = mass * lal.MTSUN_SI
+    mominert = (2/3.) * mt * (radius * 1000 / lal.C_SI)**2
+    return mominert * omega / mt**2
 
 
 #