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- .th FPTRAP III 11/18/73
- .sh NAME
- fptrap \*- floating point interpreter
- .sh SYNOPSIS
- .ft B
- sys signal; 4; fptrap
- .ft R
- .sh DESCRIPTION
- .it 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.
- .sh FILES
- 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
- .sh DIAGNOSTICS
- A break point trap is given when a real
- illegal instruction trap occurs.
- .sh "SEE ALSO"
- signal (II),
- cc (I) (`\-f' option)
- .sh BUGS
- Rounding mode is not interpreted.
- It's slow.
-