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ax0018
Associate III
April 27, 2020
Question

FPU

  • April 27, 2020
  • 2 replies
  • 819 views

Probably a typo. In M4 generic user guide the mnemonic for floating-point MAC is shown as VLMA

This topic has been closed for replies.

2 replies

waclawek.jan
Super User
April 27, 2020

How exactly are you using these instructions?

JW

AVI-crak
Senior
April 27, 2020

Perhaps there is a mistake.

VLMA mnemonics is found in only one document. But the description and function are similar to VMLA mnemonics.

The difference is VMLA's ability to handle double precision.

The latest version of GCC swears at VLMA mnemonics.

There are many applications:

a += b * c;

a -= b * c;