mirror of
git://repo.or.cz/tinycc.git
synced 2026-06-17 23:54:16 +08:00
087cf2e579
The code:
void mul(double *p)
{
*p *= 2.0;
}
failed on x86_64 because register was not loaded after
bound checking call.
Also printed size when pointer indir failes.
38 lines
492 B
C
38 lines
492 B
C
#include <stdio.h>
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#include <float.h>
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union ieee_double_extract
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{
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struct {
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unsigned int manl:32;
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unsigned int manh:20;
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unsigned int exp:11;
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unsigned int sig:1;
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} s;
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double d;
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};
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double scale(double d)
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{
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union ieee_double_extract x;
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x.d = d;
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x.d *= 1000;
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return x.d;
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}
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void mul(double *p)
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{
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*p *= 2.0;
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}
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int
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main(void)
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{
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double d = 4.0;
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printf("%g\n", scale(42));
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mul(&d);
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printf("%g\n", d);
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return 0;
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}
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