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“Quintword†is this a real word?
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From the book Modern X86 Assembly Language Programming
Quintword80 Double extended-precision floating-point,
packed BCD
It goes on to say,
Not surprisingly, most of the fundamental data types are sized using integer powers of two. The sole exception is the 80-bit quintword, which is used by the x87 FPU to support double extended-precision floating-point and packed BCD values.
I've never heard "quintword" before, is this a term? I know the x87 FPU is still used today, but that a lot of these operations are pushed to the less accurate but more parallel SSE instruction set today.
intel 8086 terminology floating-point
asked 5 hours ago
Evan Carroll
609216
add a comment |Â
up vote
1
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From the book Modern X86 Assembly Language Programming
Quintword80 Double extended-precision floating-point,
packed BCD
It goes on to say,
Not surprisingly, most of the fundamental data types are sized using integer powers of two. The sole exception is the 80-bit quintword, which is used by the x87 FPU to support double extended-precision floating-point and packed BCD values.
I've never heard "quintword" before, is this a term? I know the x87 FPU is still used today, but that a lot of these operations are pushed to the less accurate but more parallel SSE instruction set today.
intel 8086 terminology floating-point
asked 5 hours ago
Evan Carroll
609216
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
From the book Modern X86 Assembly Language Programming
Quintword80 Double extended-precision floating-point,
packed BCD
It goes on to say,
Not surprisingly, most of the fundamental data types are sized using integer powers of two. The sole exception is the 80-bit quintword, which is used by the x87 FPU to support double extended-precision floating-point and packed BCD values.
I've never heard "quintword" before, is this a term? I know the x87 FPU is still used today, but that a lot of these operations are pushed to the less accurate but more parallel SSE instruction set today.
intel 8086 terminology floating-point
asked 5 hours ago
Evan Carroll
609216
From the book Modern X86 Assembly Language Programming
Quintword80 Double extended-precision floating-point,
packed BCD
It goes on to say,
Not surprisingly, most of the fundamental data types are sized using integer powers of two. The sole exception is the 80-bit quintword, which is used by the x87 FPU to support double extended-precision floating-point and packed BCD values.
I've never heard "quintword" before, is this a term? I know the x87 FPU is still used today, but that a lot of these operations are pushed to the less accurate but more parallel SSE instruction set today.
intel 8086 terminology floating-point
intel 8086 terminology floating-point
asked 5 hours ago
Evan Carroll
609216
asked 5 hours ago
Evan Carroll
609216
edited 4 hours ago
asked 5 hours ago
Evan Carroll
609216
asked 5 hours ago
Evan Carroll
609216
asked 5 hours ago
Evan Carroll
609216
609216
add a comment |Â
add a comment |Â
1 Answer
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up vote
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It's not standard terminology, but is a reasonable term.
A Google search revealed only 7 results, all related to the 8087 floating-point coprocessor.
The term quadword was used by various manufacturers to refer to a value made up of 4 words. Intel used this naming pattern to name their 80-bit floating point numbers quintwords; that is, five words. A "word" on the 8086 is 16 bits.
Most manufacturers (including Intel later) prefer to keep scalar values as powers of 2 bits, so quintword is obsolete.
answered 4 hours ago
Dr Sheldon
500115
I didn't even realize quint was five. I thought it was Qu "int".
– Evan Carroll
4 hours ago
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
accepted
It's not standard terminology, but is a reasonable term.
A Google search revealed only 7 results, all related to the 8087 floating-point coprocessor.
The term quadword was used by various manufacturers to refer to a value made up of 4 words. Intel used this naming pattern to name their 80-bit floating point numbers quintwords; that is, five words. A "word" on the 8086 is 16 bits.
Most manufacturers (including Intel later) prefer to keep scalar values as powers of 2 bits, so quintword is obsolete.
answered 4 hours ago
Dr Sheldon
500115
I didn't even realize quint was five. I thought it was Qu "int".
– Evan Carroll
4 hours ago
add a comment |Â
up vote
3
down vote
accepted
It's not standard terminology, but is a reasonable term.
A Google search revealed only 7 results, all related to the 8087 floating-point coprocessor.
The term quadword was used by various manufacturers to refer to a value made up of 4 words. Intel used this naming pattern to name their 80-bit floating point numbers quintwords; that is, five words. A "word" on the 8086 is 16 bits.
Most manufacturers (including Intel later) prefer to keep scalar values as powers of 2 bits, so quintword is obsolete.
answered 4 hours ago
Dr Sheldon
500115
I didn't even realize quint was five. I thought it was Qu "int".
– Evan Carroll
4 hours ago
add a comment |Â
up vote
3
down vote
accepted
up vote
3
down vote
accepted
It's not standard terminology, but is a reasonable term.
A Google search revealed only 7 results, all related to the 8087 floating-point coprocessor.
The term quadword was used by various manufacturers to refer to a value made up of 4 words. Intel used this naming pattern to name their 80-bit floating point numbers quintwords; that is, five words. A "word" on the 8086 is 16 bits.
Most manufacturers (including Intel later) prefer to keep scalar values as powers of 2 bits, so quintword is obsolete.
answered 4 hours ago
Dr Sheldon
500115
It's not standard terminology, but is a reasonable term.
A Google search revealed only 7 results, all related to the 8087 floating-point coprocessor.
The term quadword was used by various manufacturers to refer to a value made up of 4 words. Intel used this naming pattern to name their 80-bit floating point numbers quintwords; that is, five words. A "word" on the 8086 is 16 bits.
Most manufacturers (including Intel later) prefer to keep scalar values as powers of 2 bits, so quintword is obsolete.
answered 4 hours ago
Dr Sheldon
500115
answered 4 hours ago
Dr Sheldon
500115
answered 4 hours ago
Dr Sheldon
500115
answered 4 hours ago
Dr Sheldon
500115
500115
I didn't even realize quint was five. I thought it was Qu "int".
– Evan Carroll
4 hours ago
add a comment |Â
I didn't even realize quint was five. I thought it was Qu "int".
– Evan Carroll
4 hours ago
I didn't even realize quint was five. I thought it was Qu "int".
– Evan Carroll
4 hours ago
I didn't even realize quint was five. I thought it was Qu "int".
– Evan Carroll
4 hours ago
add a comment |Â
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