(a) Notwithstanding Section 2933.1 or any other law, any person who is convicted of murder, as defined in Section 187, shall not accrue any credit, as specified in Section 2933 or Section 2933.05.
(b) The limitation provided in subdivision (a) shall apply whether the defendant is sentenced under Chapter 4.5 (commencing with Section 1170) of Title 7 of Part 2 or sentenced under some other law.
(c) Notwithstanding Section 4019 or any other provision of law, no credit pursuant to Section 4019 may be earned against a period of confinement in, or commitment to, a county jail, industrial farm, or road camp, or a city jail, industrial farm, or road camp, following arrest for any person specified in subdivision (a).
(d) This section shall only apply to murder that is committed on or after the date on which this section becomes operative.