dpmin_c |
Table of contents
Proceduredpmin_c ( Smallest DP number ) SpiceDouble dpmin_c () AbstractReturn the value of the smallest (negative) number representable in a double precision variable. Required_ReadingNone. KeywordsCONSTANTS Brief_I/OThe function returns the value of the smallest (negative) number that can be represented in a double precision variable. Detailed_InputNone. Detailed_OutputThe function returns the value of the smallest (negative) number that can be represented in a double precision variable. This value varies from machine to machine. Usually, the value is defined as the negative of the macro DBL_MAX from the ANSI standard header file float.h. According to the ANSI standard, DBL_MAX must be at least 1.E+37 Therefore dpmin_c usually returns a value less than or equal to -1.E+37 Exceptional systems would be those where DBL_MAX cannot be negated. Currently no such systems are supported. ParametersNone. ExceptionsError free. FilesNone. ParticularsThe function always returns a constant value, set by the user prior to compilation. ExamplesThe following code fragments illustrate the use of dpmin_c. Note in the example that the smallest negative number is not assumed to be the negative of the largest positive number. 1) Initialize a CSPICE "window." /. The window originally has one interval, from "minus infinity" to "plus infinity". ./ winsiz = 2; window[0] = dpmin_c(); window[1] = dpmax_c() ; scardd_ ( &winsiz, window ); RestrictionsNone. Literature_ReferencesNone. Author_and_InstitutionN.J. Bachman (JPL) J. Diaz del Rio (ODC Space) H.A. Neilan (JPL) M.J. Spencer (JPL) W.L. Taber (JPL) I.M. Underwood (JPL) Version-CSPICE Version 1.0.1, 02-JUN-2021 (JDR) Edited the header to comply with NAIF standard. -CSPICE Version 1.0.0, 19-OCT-1998 (NJB) (HAN) (MJS) (WLT) (IMU) Index_Entriessmallest d.p. number |
Fri Dec 31 18:41:04 2021