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| Commit | Line | Data |
|---|---|---|
| 59b6dd54 KT |
1 | .pa 1 |
| 2 | .he 'FPE (II)'9/2/72'FPE (II)' | |
| 3 | .ti 0 | |
| 4 | NAME fpe -- set floating exception handling | |
| 5 | .s3 | |
| 6 | .ti 0 | |
| 7 | SYNOPSIS sys fpe; arg / fpe = 40. not in assembler | |
| 8 | .s3 | |
| 9 | .ti 0 | |
| 10 | DESCRIPTION This call | |
| 11 | allows one to catch traps resulting from | |
| 12 | floating point exceptions. | |
| 13 | Arg\b\b\b___ is a location within the program; floating exception traps | |
| 14 | are sent to that location. | |
| 15 | The normal effect of floating exception traps may be restored by giving | |
| 16 | an arg\b\b\b___ equal to 0. | |
| 17 | .s3 | |
| 18 | To return after catching the | |
| 19 | fpe\b\b\b___ | |
| 20 | trap, execute the rti\b\b\b___ instruction. | |
| 21 | .s3 | |
| 22 | .ti 0 | |
| 23 | SEE ALSO -- | |
| 24 | .s3 | |
| 25 | .ti 0 | |
| 26 | DIAGNOSTICS -- | |
| 27 | .s3 | |
| 28 | .ti 0 | |
| 29 | BUGS The | |
| 30 | floating point exception (FEC) register | |
| 31 | is not saved per process. | |
| 32 | Examining this register for possible | |
| 33 | remedial action after a floating point | |
| 34 | exception trap is not guaranteed to work. |