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Questions - x87

Intel 8087 floating point numbers

Good morning, I have to change the constant values "wired to code" for an old machine based on intel 8086 and intel 8087 coprocessor. I have the source code, written in the RTL/2 language. U...
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Andak

assembly

floating-point

precision

intel

x87

Votes: 0

Answers: 0

How can I set the two-bit rounding control (RC) field of the FPU control word to 10 (round towards +infinity) using GAS in C

How can I set the two-bit rounding control (RC) field of the FPU control word to 10 (round towards +infinity) using GAS in C. Must use format asm( ); should only be about 7 lines of code altogether...
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Software X

c

x87

Votes: 0

Answers: 0

Dividing floats in extended assembler

In my C program, I would like to do the following in extended assembler: Divide two floating point numbers (variables), 'numerator' by 'denominator', and put the result in another variable, 'result'. ...
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LukesDiner

c

assembly

x86

inline-assembly

x87

Votes: 0

Answers: 1

Latest Answer

Before doing any inline assembly programming, read the documentation carefully. Gcc-style inline assembly is complicated and easy to get wrong. If you get it wrong, there is often no error. Instead...
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fuz

Assembly language initialization of floating-point unit

Just out of curiosity I'm fiddling around with some demoscene 256 byte intros. I came around one production which ran fine under MS-DOS 6.22 but crashes under FreeDOS 1.3 - "sometimes". It t...
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Codor

assembly

dos

x86-16

tasm

x87

Votes: 0

Answers: 0

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