Fix special cases and move note

Author: kgryte

spec/API_specification/array_api/elementwise_functions.py

@@ -533,28 +533,28 @@ def exp(x: array, /) -> array:
 
     For complex floating-point operands, let ``a = real(x_i)``, ``b = imag(x_i)``, and
 
-    - If ``a`` is either ``+0`` or ``-0`` and ``b`` is either ``+0`` or ``-0``, the result is ``1+0j``.
+    .. note::
+       For complex floating-point operands, ``exp(conj(x))`` must equal ``conj(exp(x))``.
+
+    - If ``a`` is either ``+0`` or ``-0`` and ``b`` is ``+0``, the result is ``1+0j``.
     - If ``a`` is a finite number and ``b`` is ``+infinity``, the result is ``NaN + NaN j``.
     - If ``a`` is a finite number and ``b`` is ``NaN``, the result is ``NaN + NaN j``.
-    - If ``a`` is ``+infinity`` and ``b`` is either ``+0`` or ``-0``, the result is ``infinity + 0j``.
+    - If ``a`` is ``+infinity`` and ``b`` is ``+0``, the result is ``infinity + 0j``.
     - If ``a`` is ``-infinity`` and ``b`` is a finite number, the result is ``+0 * cis(x_i)``.
     - If ``a`` is ``+infinity`` and ``b`` is a nonzero finite number, the result is ``+infinity * cis(x_i)``.
     - If ``a`` is ``-infinity`` and ``b`` is ``+infinity``, the result is ``0 + 0j`` (signs of real and imaginary components are unspecified).
     - If ``a`` is ``+infinity`` and ``b`` is ``+infinity``, the result is ``infinity + NaN j`` (sign of real component is unspecified).
     - If ``a`` is ``-infinity`` and ``b`` is ``NaN``, the result is ``0 + 0j`` (signs of real and imaginary components are unspecified).
     - If ``a`` is ``+infinity`` and ``b`` is ``NaN``, the result is ``infinity + NaN j`` (sign of real component is unspecified).
-    - If ``a`` is ``NaN`` and ``b`` is either ``+0`` or ``-0``, the result is ``NaN + 0j``.
+    - If ``a`` is ``NaN`` and ``b`` is ``+0``, the result is ``NaN + 0j``.
     - If ``a`` is ``NaN`` and ``b`` is not equal to ``0``, the result is ``NaN + NaN j``.
     - If ``a`` is ``NaN`` and ``b`` is ``NaN``, the result is ``NaN + NaN j``.
 
-    where ``cis(x_i)`` is ``cos(x_i) + sin(x_i)*1j``.
+    where ``cis(v)`` is ``cos(v) + sin(v)*1j``.
 
     .. note::
        The exponential function is an entire function in the complex plane and has no branch cuts.
 
-    .. note::
-       For complex floating-point operands, ``exp(conj(x))`` must equal ``conj(exp(x))``.
-
     Parameters
     ----------
     x: array