Merge branch 'nifty6_fix_op_expm1' into 'NIFTy_6'

Add log1p and expm1 to sugar.py and operator.py

See merge request !381

nifty6/operators/operator.py

@@ -158,8 +158,8 @@ class Operator(metaclass=NiftyMeta):
         return None, self
 
 
-for f in ["sqrt", "exp", "log", "tanh", "sigmoid", 'sin', 'cos', 'tan',
-          'sinh', 'cosh', 'absolute', 'sinc', 'one_over', 'log10']:
+for f in ["sqrt", "exp", "log", "sin", "cos", "tan", "sinh", "cosh", "tanh",
+          "sinc", "sigmoid", "absolute", "one_over", "log10", "log1p", "expm1"]:
     def func(f):
         def func2(self):
             fa = _FunctionApplier(self.target, f)

nifty6/sugar.py

@@ -36,7 +36,7 @@ __all__ = ['PS_field', 'power_analyze', 'create_power_operator',
            'full', 'from_global_data', 'from_local_data',
            'makeDomain', 'sqrt', 'exp', 'log', 'tanh', 'sigmoid',
            'sin', 'cos', 'tan', 'sinh', 'cosh', 'log10',
-           'absolute', 'one_over', 'clip', 'sinc',
+           'absolute', 'one_over', 'clip', 'sinc', "log1p", "expm1",
            'conjugate', 'get_signal_variance', 'makeOp', 'domain_union',
            'get_default_codomain', 'single_plot']
 

test/test_field.py

@@ -335,7 +335,7 @@ def test_emptydomain():
 @pmp('dom', [ift.RGSpace((8,), harmonic=True), ()])
 @pmp('func', [
     "exp", "log", "sin", "cos", "tan", "sinh", "cosh", "sinc", "absolute",
-    "sign", "log10"
+    "sign", "log10", "log1p", "expm1"
 ])
 def test_funcs(num, dom, func):
     num = 5