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Annotation of cci/usr/src/man/man3/traper.3f, revision 1.1

1.1     ! root        1: .TH TRAPER 3F  "18 July 1983"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: traper \- trap arithmetic errors
        !             5: .SH SYNOPSIS
        !             6: .B integer function traper (mask)
        !             7: .SH DESCRIPTION
        !             8: Integer overflow and floating point underflow are not normally
        !             9: trapped during execution. This routine enables these traps by setting
        !            10: status bits in the process status word. These bits are reset on
        !            11: entry to a subprogram, and the previous state is restored on return.
        !            12: Therefore, this routine must be called
        !            13: .I inside
        !            14: each subprogram in which these conditions should be trapped.
        !            15: If the condition occurs and trapping is enabled,
        !            16: signal SIGFPE is sent to the process. (See
        !            17: .IR signal (3C))
        !            18: .PP
        !            19: The argument has the following meaning:
        !            20: .nf
        !            21: 
        !            22:         value   meaning
        !            23:           0     do not trap either condition
        !            24:           1     trap integer overflow only
        !            25:           2     trap floating underflow only
        !            26:           3     trap both the above
        !            27: 
        !            28: .fi
        !            29: The previous value of these bits is returned.
        !            30: .SH FILES
        !            31: .ie \nM /usr/ucb/lib/libF77.a
        !            32: .el /usr/lib/libF77.a
        !            33: .SH "SEE ALSO"
        !            34: signal(3C), signal(3F)

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