Blame src/math/ldexpf.c

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#include <stdint.h>
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#include <stdio.h>
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#include "mtest.h"
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static struct fi_f t[] = {
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#include "sanity/ldexpf.h"
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#include "special/ldexpf.h"
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};
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int main(void)
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{
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	#pragma STDC FENV_ACCESS ON
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	float y;
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	float d;
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	int e, i, err = 0;
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	struct fi_f *p;
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	for (i = 0; i < sizeof t/sizeof *t; i++) {
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		p = t + i;
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		if (p->r < 0)
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			continue;
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		fesetround(p->r);
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		feclearexcept(FE_ALL_EXCEPT);
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		y = ldexpf(p->x, p->i);
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		e = fetestexcept(INEXACT|INVALID|DIVBYZERO|UNDERFLOW|OVERFLOW);
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		if (!checkexceptall(e, p->e, p->r)) {
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			printf("%s:%d: bad fp exception: %s ldexpf(%a, %lld)=%a, want %s",
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				p->file, p->line, rstr(p->r), p->x, p->i, p->y, estr(p->e));
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			printf(" got %s\n", estr(e));
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			err++;
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		}
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		d = ulperrf(y, p->y, p->dy);
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		if (!checkcr(y, p->y, p->r)) {
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			printf("%s:%d: %s ldexpf(%a, %lld) want %a got %a, ulperr %.3f = %a + %a\n",
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				p->file, p->line, rstr(p->r), p->x, p->i, p->y, y, d, d-p->dy, p->dy);
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			err++;
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		}
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	}
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	return !!err;
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}