Altera Floating-Point - Manual (Page 90)

Time Event
137.5 ns Output value: FFC0 0000h
Exception handling ports:
nan
asserts
The inverse square root of a negative value produces a NaN.
20 ns
data[]
value: 0000 0004h
The is a denormal value.
147.5 ns Output value: 7F80 0000h
Denormal numbers are forced-zero values, therefore the inverse square root of zero
results in infinity.
Exception handling ports:
nan
deasserts,
division_by_zero
asserts
50 ns
data[]
value: 7F80 0000h
This is an infinity value.
177.5 ns Output value: 0000 0000h
The inverse square root of an infinity value produces a zero.
Exception handling ports:
zero
asserts
Ports
Figure 11-3: ALTFP_INV_SQRT Signals
data[]
clk_en
clock
inst
ALTFP_INV_SQRT
result[]
zero
nan
division_by_zero
aclr
11-4 Ports
UG-01058
2014.12.19
Altera Corporation ALTFP_INV_SQRT IP Core
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