Editing ARM architecture family (section)

====Arithmetic instructions====
ARM includes integer arithmetic operations for add, subtract, and multiply; some versions of the architecture also support divide operations.

ARM supports 32-bit × 32-bit multiplies with either a 32-bit result or 64-bit result, though Cortex-M0 / M0+ / M1 cores do not support 64-bit results.<ref name="M0-TRM">{{cite web |url=http://infocenter.arm.com/help/topic/com.arm.doc.ddi0432c/DDI0432C_cortex_m0_r0p0_trm.pdf |title=Cortex-M0 r0p0 Technical Reference Manual |website=Arm}}</ref> Some ARM cores also support 16-bit × 16-bit and 32-bit × 16-bit multiplies.

The divide instructions are only included in the following ARM architectures:
* Armv7-M and Armv7E-M architectures always include divide instructions.<ref>{{cite web |url=https://developer.arm.com/documentation/ddi0403/latest/ |title=ARMv7-M Architecture Reference Manual |publisher=Arm |access-date=18 July 2022}}</ref>
* Armv7-R architecture always includes divide instructions in the Thumb instruction set, but optionally in its 32-bit instruction set.<ref name="ARMv7-AR-Ref">{{cite web |url=https://developer.arm.com/documentation/ddi0406/latest |title=ARMv7-A and ARMv7-R Architecture Reference Manual; Arm Holdings |publisher=arm.com |access-date=19 January 2013}}</ref>
* Armv7-A architecture optionally includes the divide instructions. The instructions might not be implemented, or implemented only in the Thumb instruction set, or implemented in both the Thumb and ARM instruction sets, or implemented if the Virtualization Extensions are included.<ref name="ARMv7-AR-Ref"/>