如何在x86 ASM中将整数转换为浮点值? [英] How to convert an integer to a floating point value in x86 ASM?

问题描述

我需要将一个整数(二进制补码)乘以一个浮点常量.这是我所拥有的:

I need to multiply an integer (two's compliment) by a floating point constant. Here is what I have:

.data
pi  dd 3.14
int dd 0ah


.code
fld pi

???

fmul ST(1), ST

如何将 int 转换为浮点值以便与 pi 相乘?

How can I convert int to a floating point value for multiplying against pi?

推荐答案

您需要 fild 指令.这里是一个参考: http://www.website.masmforum.com/tutorials/fptute/fpuchap5.htm

You need the fild instruction. Here's one reference: http://www.website.masmforum.com/tutorials/fptute/fpuchap5.htm

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