GNU/Linux man pages
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Unix |
Unix v6 |
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fptrap(3) |
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fptrap floating point interpreter sys signal; 4; fptrap is a simulator of the 11/45 FP11-B floating point unit. It works by intercepting illegal instruction traps and decoding and executing the floating point operation codes. In systems with real floating point, there is a fake routine in /lib/liba.a with this name; when simulation is desired, the real version should be put in liba.a A break point trap is given when a real illegal instruction trap occurs. signal (II), cc (I) (‘−f’ option) Rounding mode is not interpreted. It’s slow.
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fptrap(3) | |