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Diffstat (limited to 'mcon/U/d_dbl_dig.U')
-rw-r--r-- | mcon/U/d_dbl_dig.U | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/mcon/U/d_dbl_dig.U b/mcon/U/d_dbl_dig.U new file mode 100644 index 0000000..aa53e73 --- /dev/null +++ b/mcon/U/d_dbl_dig.U @@ -0,0 +1,61 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic Licence, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic Licence; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?RCS: Original Author: Andy Dougherty <doughera@lafcol.lafayette.edu> +?RCS: +?RCS: $Log: d_dbl_dig.U,v $ +?RCS: Revision 3.0.1.1 1994/08/29 16:07:28 ram +?RCS: patch32: created by ADO +?RCS: +?MAKE:d_dbl_dig: Myread contains cat rm Setvar i_limits i_float \ + cppstdin cppflags cppminus +?MAKE: -pick add $@ %< +?S:d_dbl_dig: +?S: This variable conditionally defines d_dbl_dig if this system's +?S: header files provide DBL_DIG, which is the number of significant +?S: digits in a double precision number. +?S:. +?C:HAS_DBL_DIG: +?C: This symbol, if defined, indicates that this system's <float.h> +?C: or <limits.h> defines the symbol DBL_DIG, which is the number +?C: of significant digits in a double precision number. If this +?C: symbol is not defined, a guess of 15 is usually pretty good. +?C:. +?H:#$d_dbl_dig HAS_DBL_DIG /* */ +?H:. +?F:!dbl_dig.c +?LINT:set d_dbl_dig +: See if number of significant digits in a double precision number is known +echo " " +$cat >dbl_dig.c <<EOM +#$i_limits I_LIMITS +#$i_float I_FLOAT +#ifdef I_LIMITS +#include <limits.h> +#endif +#ifdef I_FLOAT +#include <float.h> +#endif +#ifdef DBL_DIG +printf("Contains DBL_DIG"); +#endif +EOM +$cppstdin $cppflags $cppminus < dbl_dig.c >dbl_dig.E 2>/dev/null +if $contains 'DBL_DIG' dbl_dig.E >/dev/null 2>&1; then + echo "DBL_DIG found." >&4 + val="$define" +else + echo "DBL_DIG NOT found." >&4 + val="$undef" +fi +$rm -f dbl_dig.? +set d_dbl_dig +eval $setvar + |