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ALTFP_MULT IP Core
7
2014.12.19
UG-01058
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ALTFP_MULT IP Core Features
The ALTFP_MULT IP core offers the following features:
Multiplication functions.
Optional exception handling output ports such as zero, overflow, underflow, and nan.
Optional dedicated multiplier circuitries in Cyclone and Stratix series.
ALTFP_MULT Output Latency
The output latency options for the ALTFP_MULT IP core are similar for all precisions.
Table 7-1: Latency Options for Each Precision Format
Precision Mantissa Width Latency (in clock cycles)
Single 23 5, 6, 10,11
Double 52 5, 6, 10,11
Single-Extended 31–52 5, 6, 10,11
ALTFP_MULT Truth Table
Table 7-2: Truth Table for Multiplier Operations
DATAA[] DATAB[] RESULT[] Overflow Underflow Zero NaN
Normal Normal Normal 0 0 0 0
Normal Normal Denormal 0 1 1 0
Normal Normal Infinity 1 0 0 0
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