More bash float testing

#!/bin/sh

. float.subr || exit
    # https://raw.githubusercontent.com/FrauBSD/FrauBSD/master/usr.sbin/bsdconfig/share/float.subr

N=1
EXIT=${SUCCESS:-0}
HR="--------------------"
VERBOSE=

hrprint() { printf "%s #%03u %s\n" "$HR" "$N" "$HR"; }
hr() { [ "$VERBOSE" ] && hrprint; }

xt()
{
    local float1="$1" float2="$3" testvalue="$5" result=
    hr
    f_float "$float1" + "$float2" result
    if [ "$result" = "$testvalue" ]; then
        [ "$VERBOSE" ] && echo "$float1 + $float2 == $result"
    else
        [ "$VERBOSE" ] || hrprint
        echo "$float1 + $float2 == $result [bad; expected $testvalue]"
        EXIT=${FAILURE:-1}
    fi
    N=$(( $N + 1 ))
}

: 001 ; xt 0.009 + 0.019 == 0.028
: 002 ; xt 0.001 + 0.019 == 0.02
: 003 ; xt 0.090 + 0.019 == 0.109
: 004 ; xt 0.990 + 0.019 == 1.009
: 005 ; xt 0.990 + 0.01 == 1.0
: 006 ; xt 0.99 + 0.01 == 1.0
: 007 ; xt 0.990 + 0.01 == 1.0
: 008 ; xt 0.090 + 0.019 == 0.109
: 009 ; xt 0.001 + 0.019 == 0.02
: 010 ; xt 0.009 + 0.019 == 0.028
: 011 ; xt 0.009 + 0.09 == 0.099
: 012 ; xt 0.005 + 0.01 == 0.015
: 013 ; xt 0.005 + 0.010 == 0.015
: 014 ; xt 0.05 + 0.010 == 0.06
: 015 ; xt 0.5 + 0.010 == 0.51
: 016 ; xt 0.5 + 0.01 == 0.51
: 017 ; xt 0.5 + 0.25 == 0.75
: 018 ; xt 0.1 + 0.5 == 0.6
: 019 ; xt 768614336404564650 + 1 == 768614336404564651
: 020 ; xt 0.768614336404564650 + 0.300000000000000001 == 1.068614336404564651
: 021 ; xt 58924.2049 + 123.66 == 59047.8649
: 022 ; xt 1 + 1 == 2
: 023 ; xt -1 + -2 == -3
: 024 ; xt -2 + 1 == -1
: 025 ; xt -1 + 1 == 0
: 026 ; xt 1 + -1 == 0
: 027 ; xt 1 + -2 == -1
: 028 ; xt -2 + -1 == -3
: 029 ; xt 0 + 0 == 0
: 030 ; xt 0.0 + 1 == 1.0
: 031 ; xt .0 + 1 == 1.0
: 032 ; xt .0 + 0 == 0.0
: 033 ; xt .0 + .0 == 0.0
: 034 ; xt . + . == 0
: 035 ; xt a + b == 0
: 036 ; xt a + . == 0
: 037 ; xt a + 0.0 == 0.0
: 038 ; xt a + .0 == 0.0
: 039 ; xt 0 + 0.00 = 0.0
: 040 ; xt -2 + -1 == -3
: 041 ; xt 1 + -2 == -1
: 042 ; xt 1 + -1 == 0
: 043 ; xt -1 + 1 == 0
: 044 ; xt -2 + 1 == -1
: 045 ; xt -1 + -2 == -3
: 046 ; xt 1 + 0.0 == 1.0
: 047 ; xt 1 + .0 == 1.0
: 048 ; xt 0 + .0 == 0.0
: 049 ; xt . + a == 0
: 050 ; xt 0.0 + a == 0.0
: 051 ; xt .0 + a == 0.0
: 052 ; xt 0.00 + 0 = 0.0
: 053 ; xt 0.01 + 256.000000000000000000010 == 256.01000000000000000001

exit $EXIT