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| author | john haque <j.eh@mchsi.com> | 2012-03-31 08:05:19 -0500 |
|---|---|---|
| committer | john haque <j.eh@mchsi.com> | 2012-03-31 08:05:19 -0500 |
| commit | a11e3c290c877c3ffc11e886edb95199a31fac2b (patch) | |
| tree | 6f0adf29270f4611068496a9cc8ddd0b8353d6c3 /doc/gawk.1 | |
| parent | 40645cb3cb155eb59dd745af4ae0e06e729c8eb1 (diff) | |
| download | egawk-a11e3c290c877c3ffc11e886edb95199a31fac2b.tar.gz egawk-a11e3c290c877c3ffc11e886edb95199a31fac2b.tar.bz2 egawk-a11e3c290c877c3ffc11e886edb95199a31fac2b.zip | |
Documentation updates for arbitrary precision math support.
Diffstat (limited to 'doc/gawk.1')
| -rw-r--r-- | doc/gawk.1 | 42 |
1 files changed, 42 insertions, 0 deletions
@@ -355,6 +355,16 @@ only warnings about things that are actually invalid are issued. (This is not fully implemented yet.) .TP .PD 0 +.B \-M +.TP +.PD +.B \-\^\-bcmath +Force arbitrary precision arithmetic on numbers. This option has +no effect if +.I gawk +is not compiled to use the GNU MPFR and MP libraries. +.TP +.PD 0 .B \-n .TP .PD @@ -1031,6 +1041,10 @@ The output field separator, a space by default. .B ORS The output record separator, by default a newline. .TP +.B PREC +The working precision of arbitrary precision floating-point +numbers, 53 by default. +.TP .B PROCINFO The elements of this array provide access to information about the running \*(AK program. @@ -1137,11 +1151,39 @@ where is a redirection string or a filename. A value of zero or less than zero means no timeout. .TP +\fBPROCINFO["mpfr_version"]\fP +the version of the GNU MPFR library used for arbitrary precision +number support in +.IR gawk . +.TP +\fBPROCINFO["gmp_version"]\fP +the version of the GNU MP library used for arbitrary precision +number support in +.IR gawk . +.TP +\fBPROCINFO["prec_max"]\fP +the maximum precision supported by the GNU MPFR library for +arbitrary precision floating-point numbers. +.TP +\fBPROCINFO["prec_min"]\fP +the minimum precision allowed by the GNU MPFR library for +arbitrary precision floating-point numbers. +.TP \fBPROCINFO["version"]\fP the version of .IR gawk . .RE .TP +.B RNDMODE +The rounding mode to use for arbitrary precision arithmetic on +numbers, by default \fB"N"\fR (IEEE-754 roundTiesToEven mode). +The accepted values are +\fB"U"\fR for roundTowardPositive, +\fB"D"\fR for roundTowardNegative, +\fB"Z"\fR for roundTowardZero, +and if your version of GNU MPFR library supports it, +\fB"A"\fR for roundTiesToAway. +.TP .B RS The input record separator, by default a newline. .TP |