PM0214 datasheet(149/245 Pages) STMICROELECTRONICS

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PM0214

The STM32 Cortex-M4 instruction set

244

3.10.1

VABS

Floating-point Absolute.

Syntax

VABS{cond}.F32 Sd, Sm

where:

•

‘cond’ is an optional condition code, see Conditional execution on page 64.

•

‘Sd, Sm’ are the destination floating-point value and the operand floating-point value.

Operation

This instruction:

Takes the absolute value of the operand floating-point register.

Places the results in the destination floating-point register.

Restrictions

There are no restrictions.

Condition flags

The floating-point instruction clears the sign bit.

Examples

VABS.F32 S4, S6

VMRS

Move to ARM core register from floating-point

System Register

VMRS on page 162

VMSR

Move to floating-point System Register from ARM

Core register

VMSR on page 163

VMUL

Multiply floating-point

VMUL on page 163

VNEG

Floating-point negate

VNEG on page 164

VNMLA

Floating-point multiply and add

VNMLA, VNMLS, VNMUL on

page 165

VNMLS

Floating-point multiply and subtract

VNMLA, VNMLS, VNMUL on

page 165

VNMUL

Floating-point multiply

VNMLA, VNMLS, VNMUL on

page 165

VPOP

Pop extension registers

VPOP on page 166

VPUSH

Push extension registers

VPUSH on page 166

VSQRT

Floating-point square root

VSQRT on page 167

VSTM

Store Multiple extension registers

VSTM on page 167

VSTR

Stores an extension register to memory

VSTR on page 168

VSUB

Floating-point Subtract

VSUB on page 169

Table 35. Floating-point instructions

Mnemonic

Brief description

See

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