gaboshlib/g_calc.sh aktualisiert

This commit is contained in:
olli 2023-11-07 13:18:32 +01:00
parent 3e981f64dd
commit c335791caa

View File

@ -1,6 +1,5 @@
function g_calc {
# Use bc in backround for multiple bc's running much faster
if [ -z "${g_bc_running}" ]
then
@ -12,31 +11,41 @@ function g_calc {
[ -p ${g_tmp}/${g_rnd}/bc-sed-out ] || mkfifo ${g_tmp}/${g_rnd}/bc-sed-out
# bc stream channel
bc -ql <${g_tmp}/${g_rnd}/bc-in >${g_tmp}/${g_rnd}/bc-out &
{ bc -ql <${g_tmp}/${g_rnd}/bc-in 2>&1 >${g_tmp}/${g_rnd}/bc-out & } 2>/dev/null
exec 3>${g_tmp}/${g_rnd}/bc-in 4<${g_tmp}/${g_rnd}/bc-out
# sed stream channel
sed -su 's/^\./0./; s/^-\./-0./' <${g_tmp}/${g_rnd}/bc-sed-in >${g_tmp}/${g_rnd}/bc-sed-out &
{ sed -su 's/^\./0./; s/^-\./-0./' <${g_tmp}/${g_rnd}/bc-sed-in >${g_tmp}/${g_rnd}/bc-sed-out & } 2>/dev/null
exec 5>${g_tmp}/${g_rnd}/bc-sed-in 6<${g_tmp}/${g_rnd}/bc-sed-out
g_bc_running="true"
fi 2>/dev/null
fi
# do bc
echo "scale=8; $@" >&3
local g_bc_out
if ! read -t 0 g_bc_out <&4
if ! read -t 0.1 g_bc_out <&4
then
g_traceback
g_traceback "$@"
( exec 3<&- ) 2>/dev/null
( exec 4<&- ) 2>/dev/null
( exec 5<&- ) 2>/dev/null
( exec 6<&- ) 2>/dev/null
unset g_bc_running
return 1
fi
# do sed
echo ${g_bc_out} >&5
local g_sed_out
if ! read -t 0 g_sed_out <&6
if ! read -t 0.1 g_sed_out <&6
then
g_traceback
g_traceback "$@"
( exec 3<&- ) 2>/dev/null
( exec 4<&- ) 2>/dev/null
( exec 5<&- ) 2>/dev/null
( exec 6<&- ) 2>/dev/null
unset g_bc_running
return 1
fi