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