ARM Compiler toolchain Assembler ReferenceVersion 4.1
Home > NEON and VFP Programming > VFP instructions > VCVT (between floating-point and integer)

VCVT (between floating-point and integer)

Convert between floating-point numbers and integers.

VCVT is always scalar.

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VCVT{R}{cond}.type.F64 Sd, Dm

VCVT{R}{cond}.type.F32 Sd, Sm

VCVT{cond}.F64.type Dd, Sm

VCVT{cond}.F32.type Sd, Sm

where:

R

makes the operation use the rounding mode specified by the FPSCR. Otherwise, the operation rounds towards zero.

cond

is an optional condition code.

type

can be either U32 (unsigned 32-bit integer) or S32 (signed 32-bit integer).

Sd

is a single-precision register for the result.

Dd

is a double-precision register for the result.

Sm

is a single-precision register holding the operand.

Dm

is a double-precision register holding the operand.

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The first two forms of this instruction convert from floating-point to integer.

The third and fourth forms convert from integer to floating-point.

Show/hideFloating-point exceptions

These instructions can produce Input Denormal, Invalid Operation, or Inexact exceptions.

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Reference:
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Home > NEON and VFP Programming > VFP instructions > VCVT (between floating-point and integer)