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Created
Mon, Oct 14, 14:18
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1 KB
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text/x-java
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Wed, Oct 16, 14:18 (2 d)
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blob
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rOACCT Open Access Compliance Check Tool (OACCT)
index.js
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// @flow
import
{
write
,
read
}
from
"@xtuc/ieee754"
;
/**
* According to https://webassembly.github.io/spec/binary/values.html#binary-float
* n = 32/8
*/
export
const
NUMBER_OF_BYTE_F32
=
4
;
/**
* According to https://webassembly.github.io/spec/binary/values.html#binary-float
* n = 64/8
*/
export
const
NUMBER_OF_BYTE_F64
=
8
;
export
const
SINGLE_PRECISION_MANTISSA
=
23
;
export
const
DOUBLE_PRECISION_MANTISSA
=
52
;
export
function
encodeF32
(
v
:
number
)
:
Array
<
number
>
{
const
buffer
=
[];
write
(
buffer
,
v
,
0
,
true
,
SINGLE_PRECISION_MANTISSA
,
NUMBER_OF_BYTE_F32
);
return
buffer
;
}
export
function
encodeF64
(
v
:
number
)
:
Array
<
number
>
{
const
buffer
=
[];
write
(
buffer
,
v
,
0
,
true
,
DOUBLE_PRECISION_MANTISSA
,
NUMBER_OF_BYTE_F64
);
return
buffer
;
}
export
function
decodeF32
(
bytes
:
Array
<
Byte
>
)
:
number
{
const
buffer
=
Buffer
.
from
(
bytes
);
return
read
(
buffer
,
0
,
true
,
SINGLE_PRECISION_MANTISSA
,
NUMBER_OF_BYTE_F32
);
}
export
function
decodeF64
(
bytes
:
Array
<
Byte
>
)
:
number
{
const
buffer
=
Buffer
.
from
(
bytes
);
return
read
(
buffer
,
0
,
true
,
DOUBLE_PRECISION_MANTISSA
,
NUMBER_OF_BYTE_F64
);
}
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