Name: is_numeric Purpose: determines if input string is a validly formatted number. Does Inputs: s: the string to be checked Outputs: 1: if it is validly formatted 0: if it is not Keywords: sci_notation: add support for scientific notation (3*10^6) decimal: when set, only return 1 for decimal numeric values, such as 1.0, 0.000004, returns 0 for scientific, exponential, engineering, etc. notations Notes: Does not consider numbers in complex notation or numbers with trailing type codes to be valid. Examples: print,is_numeric('1') 1 print,is_numeric('1.23e45') 1 print,is_numeric('1.2c34') 0 print,is_numeric('1B') 0 print,is_numeric('-1.23d-3') 1 print,is_numeric('5e+4') 1 print,is_numeric('5.e2') 1 print,is_numeric('5.e3.2') 0 Examples using scientific notation: print,is_numeric('4*10^2', /sci) 1 print,is_numeric('4*10^-6', /sci) 1 print,is_numeric('4*10^(-12)', /sci) 1 print,is_numeric('12.3*10^2', /sci) 1 print,is_numeric('10^-2.2', /sci) 1 print,is_numeric('10.^-2.2', /sci) 1 print,is_numeric('12.3*10^', /sci) 0 print,is_numeric('12.3*', /sci) 0 $LastChangedBy: nikos $ $LastChangedDate: 2014-05-13 09:46:59 -0700 (Tue, 13 May 2014) $ $LastChangedRevision: 15109 $ $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/general/misc/is_numeric.pro $