Altera Floating-Point Uživatelský manuál stáhnout pdf (Strana 57)

DATAA[] DATAB[] SIGN BIT RESULT[] Overflow Underflo

Zero Division-

by-zero

NaN

Denormal NaN X NaN 0 0 0 0 1

Zero Normal 0/1 Zero 0 0 1 0 0

Zero Denorma

0/1 NaN 0 0 0 0 1

Zero Zero 0/1 NaN 0 0 0 0 1

Zero Infinity 0/1 Zero 0 0 1 0 0

Zero NaN X NaN 0 0 0 0 1

Infinity Normal 0/1 Infinity 0 0 0 0 0

Infinity Denorma

0/1 Infinity 0 0 0 0 0

Infinity Zero 0/1 Infinity 0 0 0 0 0

Infinity Infinity 0/1 NaN 0 0 0 0 1

Infinity NaN X NaN 0 0 0 0 1

NaN Normal X NaN 0 0 0 0 1

NaN Denorma

X NaN 0 0 0 1 1

NaN Zero X NaN 0 0 0 1 1

NaN Infinity X NaN 0 0 0 0 1

NaN NaN X NaN 0 0 0 0 1

ALTFP_DIV Resource Utilization and Performance

This table lists the resource utilization and performance information for the ALTFP_DIV IP core. The

information was derived using the Quartus II software version 10.0.

Table 6-3: ALTFP_DIV Resource Utilization and Performance for Stratix IV Devices

Device family Precision

Optimiza‐

tion

Output

latency

Logic Usage

MAX

(MHz)

Adaptive

Look-Up

Tables

(ALUTs)

Dedicate

d Logic

Registers

(DLRs)

Adaptive

Logic

Modules

(ALMs)

18-bit

DSP

Stratix IV

Single

Speed 33 3,593 3,351 2,500 — 313

Area 33 1,646 2,074 1,441 — 308

Double

Speed 61 13,867 13,143 10,196 — 292

Area 61 5,125 7,360 4,842 — 267

UG-01058

2014.12.19

ALTFP_DIV Resource Utilization and Performance

6-3

ALTFP_DIV IP Core

Altera Corporation

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