selected_real_kind(3I)
SELECTED_REAL_KIND - Returns the real kind type parameter
As shipped in IRIX 6.5. First release of IRIX 6.5.
NAME SELECTED_REAL_KIND - Returns the real kind type parameter SYNOPSIS SELECTED_REAL_KIND ([[P=]p] [,[R=]r]) IMPLEMENTATION UNICOS, UNICOS/mk, and IRIX systems STANDARDS Fortran 90 DESCRIPTION The SELECTED_REAL_KIND intrinsic function returns the real kind type parameter of a real data type with decimal precision of at least p digits and a decimal exponent range of at least r. At least one argument must be present, and the arguments are as follows: p Must be scalar and of type integer r Must be scalar and of type integer SELECTED_REAL_KIND is a transformational function. The name of this intrinsic cannot be passed as an argument. RETURN VALUES This intrinsic function returns the real kind type parameter corresponding to the decimal precision and exponent range specified by its arguments. The result is a default integer scalar. The result has a value equal to a value of the kind type parameter of a real data type with decimal precision, as returned by the function PRECISION, of at least p digits and a decimal exponent range, as returned by the function RANGE, of at least r, or if no such kind type parameter exists, the result is -1 if the precision is not available, -2 if the exponent range is not available, and -3 if neither is available. If more than one kind type parameter value meets the criteria, the value returned is the one with the smallest decimal precision, unless there are several such values, in which case the smallest of these kind values is returned. EXAMPLES On UNICOS and UNICOS/mk systems, the following program is run: PARAMETER (NP=9,NR=9) INTEGER P(NP),R(NR),A(NR),B(NP) DATA P /-1,0,1,6,7,13,14,28,29/ DATA R /-1,0,1,37,38,307,308,2465,2466/ WRITE (6,FMT='('' (P,R)|'',10I5)') R WRITE(6,FMT='(" ----------------------------------------------")') DO I=1,NP DO J=1,NR A(J)=SELECTED_REAL_KIND(P(I),R(J)) END DO WRITE (6,FMT='(I6,''|'',10I5)') P(I),(A(K),K=1,NR) END DO WRITE(6,FMT='(//)') WRITE (6,FMT='('' (P) | (R=NULL)'',10I5)') WRITE(6,FMT='(" ----------------------------------------------")') DO I=1,NP B(I)=SELECTED_REAL_KIND(P=P(I)) END DO WRITE (6,FMT='(I6,''|'',I5)') (P(K),B(K),K=1,NP) WRITE(6,FMT='(//)') WRITE (6,FMT='('' (P=NULL)| (R)'',10I5)') R WRITE(6,FMT='(" ----------------------------------------------")') DO J=1,NR A(J)=SELECTED_REAL_KIND(R=R(J)) END DO WRITE (6,FMT='(I9,''| '',10I5)') 0,(A(K),K=1,NR) STOP END On IRIX systems, the following program is run: PARAMETER (NP=9,NR=9) INTEGER P(NP),R(NR),A(NR) * TEST CASE FOR IRIX DATA P /-1,0,1,6,7,15,16,31,32/ DATA R /-1,0,1,37,38,291,292,307,308/ WRITE (6,FMT='('' (P,R)|'',10I5)') R WRITE(6,FMT='(" ----------------------------------------------", + "-----------------------")') DO I=1,NP DO J=1,NR A(J)=SELECTED_REAL_KIND(P(I),R(J)) END DO WRITE (6,FMT='(I6,''|'',10I5)') P(I),(A(K),K=1,NR) END DO WRITE(6,FMT='(//)') WRITE (6,FMT='('' (P) | (R=NULL)'',10I5)') WRITE(6,FMT='(" ----------------------------------------------")') DO I=1,NP A(I)=SELECTED_REAL_KIND(P=P(I)) END DO WRITE (6,FMT='(I6,''|'',I5)') (P(K),A(K),K=1,NP) WRITE(6,FMT='(//)') WRITE (6,FMT='('' (P=NULL)| (R)'',10I5)') R WRITE(6,FMT='(" ----------------------------------------------", + "------------------------------")') DO J=1,NR A(J)=SELECTED_REAL_KIND(R=R(J)) END DO WRITE (6,FMT='(I9,''| '',10I5)') 0,(A(K),K=1,NR) STOP END The following tables show the results obtained from the preceding programs. Return values on CRAY Y-MP M90 systems and CRAY Y-MP E systems: (p,r) | -1 0 1 37 38 307 309 2465 2466 ---------------------------------------------------- -1 | 4 4 4 4 4 4 4 4 -2 0 | 4 4 4 4 4 4 4 4 -2 1 | 4 4 4 4 4 4 4 4 -2 6 | 4 4 4 4 4 4 4 4 -2 7 | 8 8 8 8 8 8 8 8 -2 13 | 8 8 8 8 8 8 8 8 -2 14 | 16 16 16 16 16 16 16 16 -2 28 | 16 16 16 16 16 16 16 16 -2 29 | -1 -1 -1 -1 -1 -1 -1 -1 -3 (p) | (r=NULL) --------------- -1 | 4 0 | 4 1 | 4 6 | 4 7 | 8 13 | 8 14 | 16 28 | 16 29 | -1 (p=NULL) | (r) -1 0 1 37 38 307 309 2465 2466 ---------------------------------------------------------- 0 | 4 4 4 4 4 4 4 4 -2 Return values on IRIX systems: (p,r) | -1 0 1 37 38 291 292 307 308 ------------------------------------------------------------------ -1 | 4 4 4 4 8 8 8 8 -2 0 | 4 4 4 4 8 8 8 8 -2 1 | 4 4 4 4 8 8 8 8 -2 6 | 4 4 4 4 8 8 8 8 -2 7 | 8 8 8 8 8 8 8 8 -2 15 | 8 8 8 8 8 8 8 8 -2 16 | 16 16 16 16 16 -2 -2 -2 -2 31 | 16 16 16 16 16 -2 -2 -2 -2 32 | -1 -1 -1 -1 -1 -1 -1 -1 -3 (p) | (r=NULL) ---------------- -1 | 4 0 | 4 1 | 4 6 | 4 7 | 8 15 | 8 16 | 16 31 | 16 32 | -1 (p=NULL) | (r) -1 0 1 37 38 291 292 307 308 ----------------------------------------------------------- 0 | 4 4 4 4 8 8 8 8 -2 Return values on CRAY T90 (IEEE) systems: (p,r) | -1 0 1 37 38 307 308 4931 4932 ---------------------------------------------------- -1 | 4 4 4 4 8 8 16 16 -2 0 | 4 4 4 4 8 8 16 16 -2 1 | 4 4 4 4 8 8 16 16 -2 6 | 4 4 4 4 8 8 16 16 -2 7 | 8 8 8 8 8 8 16 16 -2 15 | 8 8 8 8 8 8 16 16 -2 16 | 16 16 16 16 16 16 16 16 -2 33 | 16 16 16 16 16 16 16 16 -2 34 | -1 -1 -1 -1 -1 -1 -1 -1 -3 (p) | (r=NULL) ---------------- -1 | 4 0 | 4 1 | 4 6 | 4 7 | 8 15 | 8 16 | 16 33 | 16 34 | -1 (p=NULL) | (r) -1 0 1 37 38 307 308 4931 4932 ----------------------------------------------------------- 0 | 4 4 4 4 8 8 16 16 -2 SEE ALSO MODELS(3I) Intrinsic Procedures Reference Manual, publication SR-2138, for the printed version of this man page.