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# Evaluator codes. These codes are the only ones recognized by the
# run-time expression evaluator, during the evaluation of the RPN
# code generated by the parser.
# End of code marker
define PEV_EOC (-1)
# Numbers
define PEV_NUMBER 0 # real constant
# Variables
define PEV_OBSVAR 1 # observational variable
define PEV_CATVAR 2 # catalog variable
define PEV_PARAM 3 # fitting or constant parameter
define PEV_SETEQ 4 # set equation
define PEV_EXTEQ 5 # extinction equation
define PEV_TRNEQ 6 # transformation equation
# Unary operators
define PEV_UPLUS 10 # unary plus
define PEV_UMINUS 11 # unary minus
# Binary operators
define PEV_PLUS 20 # addition
define PEV_MINUS 21 # substraction
define PEV_STAR 22 # multiplication
define PEV_SLASH 23 # division
define PEV_EXPON 24 # exponentiation
# Functions
define PEV_ABS 30 # absolute value
define PEV_ACOS 31 # arc cosine
define PEV_ASIN 32 # arc sine
define PEV_ATAN 33 # arc tangent
define PEV_COS 34 # cosine
define PEV_EXP 35 # exponential
define PEV_LOG 36 # natural logarithm
define PEV_LOG10 37 # decimal logarithm
define PEV_SIN 38 # sine
define PEV_SQRT 39 # square root
define PEV_TAN 40 # tangent
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