Module units

        Add new units at end of file

    """

    

    

    import os

    import sys

    import importlib.util

    from pathlib import Path, PurePath

    

    # rivtcalc path information - comment out for more general

    path1 = importlib.util.find_spec("rivt")

    rivpath = Path(path1.origin).parent

    unumpath = Path(rivpath, "unum")

    sys.path.append(str(rivpath))

    sys.path.append(str(unumpath))

    

    from unum.core import *

    from unum.utils import *

    from unum.core import Unum

    from unum.utils import uarray

    

    # print(sys.path)

    

    Unum.set_format(

        mul_separator=" ",

        div_separator="",

        unit_format="%s",

        value_format="%.2f",

        unitless="",  # hide empty

        superscript=False,

    )

    # print(dir())

    # standard SI units ==== DO NOT MODIFY BETWEEN DOUBLE LINES  ===================

    # temperature conversion is relative degree size, not offset ------------

    K = new_unit("K", 0, "kelvin")

    CELSIUS = new_unit("deg C", K, "degree Celsius")

    FAHR = new_unit("degF", K * 9.0 / 5, "degree Fahrenheit")

    M = new_unit("m", 0, "meter")

    NM = new_unit("nm", 10**-9 * M, "nanometer")

    UM = new_unit("um", 10**-6 * M, "micrometer")

    MM = new_unit("mm", 10**-3 * M, "millimeter")

    CM = new_unit("cm", 10**-2 * M, "centimeter")

    DM = new_unit("dm", 10**-1 * M, "decimeter")

    SEC = S = new_unit("s", 0, "second")

    A = new_unit("A", 0, "ampere")

    MA = new_unit("mA", 10**-3 * A, "milliampere")

    MOL = new_unit("mol", 0, "mole")

    KG = new_unit("kg", 0, "kilogram")

    GRAM = new_unit("gram", 10**-3 * KG, "gram")

    RAD = new_unit("rad", M / M, "radian")

    SR = new_unit("sr", M**2 / M**2, "steradian")

    HZ = new_unit("Hz", 1 / S, "hertz")

    N = new_unit("N", M * KG / S**2, "newton")

    J = new_unit("J", N * M, "joule")

    W = new_unit("W", J / S, "watt")

    C = new_unit("C", S * A, "coulomb")

    VO = new_unit("V", W / A, "volt")

    F = new_unit("F", C / VO, "farad")

    OHM = new_unit("ohm", VO / A, "ohm")

    SIEMENS = new_unit("siemens", A / VO, "siemens")

    WB = new_unit("Wb", VO * SIEMENS, "weber")

    TS = new_unit("TS", WB / M**2, "tesla")

    HENRY = new_unit("H", WB / A, "henry")

    CD = new_unit("cd", 0, "candela")

    LM = new_unit("lm", CD * SR, "lumen")

    LX = new_unit("lx", LM / M**2, "lux")

    # ============  DO NOT MODIFY ABOVE THIS LINE  =================================

    # metric units ----------------------------------------------------------

    G = new_unit("G", 9.80665 * M / S**2, "gravity acceleration")

    PA = new_unit("Pa", N / M**2, "pascal")

    MPA = new_unit("MPa", PA * (10**6), "megapascals")

    KPA = new_unit("KPa", PA * (10**3), "kilopascals")

    KN = new_unit("KN", N * (10**3), "kilonewton")

    MN = new_unit("MN", N * (10**6), "meganewton")

    KM = new_unit("KM", M * (10**3), "kilometer")

    KNCM = new_unit("KNcM", KN / (M**3), "kilonewton per cubic meter")

    SM = new_unit("sM", (M**2), "square meter")

    # imperial--------------------------------------------------------------

    # length

    IN = new_unit("in", M / 39.370079, "inch")

    FT = new_unit("ft", M / 3.2808399, "foot")

    MILES = new_unit("miles", FT * 5280, "miles")

    # mass

    LBM = new_unit("lbm", KG / 2.2046226, "pound-mass")

    # force

    LBF = new_unit("lbs", 4.4482216 * N, "pound-force")

    KIPS = new_unit("kips", LBF * 1000.0, "kilopounds")

    KIP = new_unit("kip", LBF * 1000.0, "kilopound")

    # moment

    FT_KIPS = new_unit("ft-kips", FT * LBF * 1000.0, "foot-kips")

    IN_KIPS = new_unit("in-kips", IN * LBF * 1000.0, "inch-kips")

    # area

    SF = new_unit("sf", FT**2, "square feet")

    SQIN = new_unit("sqin", IN**2, "square feet")

    # pressure

    PSF = new_unit("psf", LBF / FT**2, "pounds per square foot")

    PSI = new_unit("psi", LBF / IN**2, "pounds per square inch")

    KSF = new_unit("ksf", KIPS / FT**2, "kips per square foot")

    KSI = new_unit("ksi", KIPS / IN**2, "kips per square inch")

    # density

    PCI = new_unit("pci", LBF / IN**3, "pounds per cubic inch")

    PCF = new_unit("pcf", LBF / FT**3, "pounds per cubic ft")

    # line loads

    KLI = new_unit("kips/in", KIPS / IN, "kips per inch")

    PLI = new_unit("lbf/in", LBF / IN, "pounds per inch")

    PLF = new_unit("lbf/ft", LBF / FT, "pounds per foot")

    KLF = new_unit("kips/ft", KIPS / FT, "kips per foot")

    # time

    HR = new_unit("hr", 60 * 60 * S, "hours")

    # velocity

    MPH = new_unit("mph", MILES / HR, "miles per hour")

    FPS = new_unit("fps", FT / SEC, "feet per second")