constants.py

# See LICENSE.md for full license.
"""
Constants used in computation.
"""

# Boundary conditions
# 2 BCs on each of 6 hexahedral faces (12 bits)
XI = {
    'M': {
        'mask': 0x00007,  # Equivalent to XI_M
        'SYMM': 0x00001,  # Equivalent to XI_M_SYMM
        'FREE': 0x00002,  # Equivalent to XI_M_FREE
        'COMM': 0x00004,  # Equivalent to XI_M_COMM
    },
    'P': {
        'mask': 0x00038,
        'SYMM': 0x00008,
        'FREE': 0x00010,
        'COMM': 0x00020,
    },
}

ETA = {
    'M': {
        'mask': 0x001c0,
        'SYMM': 0x00040,
        'FREE': 0x00080,
        'COMM': 0x00100,
    },
    'P': {
        'mask': 0x00e00,
        'SYMM': 0x00200,
        'FREE': 0x00400,
        'COMM': 0x00800,
    },
}

ZETA = {
    'M': {
        'mask': 0x07000,
        'SYMM': 0x01000,
        'FREE': 0x02000,
        'COMM': 0x04000,
    },
    'P': {
        'mask': 0x38000,
        'SYMM': 0x08000,
        'FREE': 0x10000,
        'COMM': 0x20000,
    },
}