Texas Instruments TMS320C67X/C67X+ DSP User Manual

Page 54

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Control Register File Extensions

CPU Data Paths and Control

2-28

SPRU733

Table 2−15. Floating-Point Auxiliary Configuration Register (FAUCR)

Field Descriptions (Continued)

Bit

Description

Value

Field

25

UNORD

Source to a compare operation for .S2

0

NaN is not a source to a compare operation.

1

NaN is a source to a compare operation.

24

UND

Result underflow status for .S2.

0

Result does not underflow.

1

Result underflows.

23

INEX

Inexact results status for .S2.

0

1

Result differs from what would have been computed had the exponent range
and precision been unbounded; never set with INVAL.

22

OVER

Result overflow status for .S2.

0

Result does not overflow.

1

Result overflows.

21

INFO

Signed infinity for .S2.

0

Result is not signed infinity.

1

Result is signed infinity.

20

INVAL

0

A signed NaN (SNaN) is not a source.

1

A signed NaN (SNaN) is a source. NaN is a source in a floating-point to integer
conversion or when infinity is subtracted from infinity.

19

DEN2

Denormalized number select for .S2 src2.

0

src2 is not a denormalized number.

1

src2 is a denormalized number.

18

DEN1

Denormalized number select for .S2 src1.

0

src1 is not a denormalized number.

1

src1 is a denormalized number.

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