Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!amdahl!nsc!andrew
From: andrew@nsc.nsc.com (Andrew Lue)
Newsgroups: comp.lang.c
Subject: unsigned int assigned to double yields negative # ... Why?
Message-ID: <5020@nsc.nsc.com>
Date: 17 Mar 88 22:41:52 GMT
Organization: National Semiconductor, Sunnyvale
Lines: 20
Keywords: conversions

Using various C compilers on VAX and Series 32000 based machines, I've
compiled the code below.  I've gotten negative results instead of positive
results.

main()
{
unsigned int ui = 0xf0000000;
double d;

d = ui;
printf("%d\n");
}

The books by K&R and Harrison & Steele are unclear about how this conversion
should be applied.  Does anyone know what the definitive conversion is?
Or is the decision left up to the compiler writers?


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Andrew H. Lue                                          {decwrl|sun}!nsc!andrew