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Diffstat (limited to 'mcon/U/i_math.U')
| -rw-r--r-- | mcon/U/i_math.U | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/mcon/U/i_math.U b/mcon/U/i_math.U new file mode 100644 index 0000000..057c3e9 --- /dev/null +++ b/mcon/U/i_math.U @@ -0,0 +1,52 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?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 License; 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: i_math.U,v $ +?RCS: Revision 3.0.1.1 1994/08/29 16:21:59 ram +?RCS: patch32: created by ADO +?RCS: +?MAKE:i_math: Inhdr Trylink cat +?MAKE: -pick add $@ %< +?X: Are there really systems that *DON'T* have math.h? +?S:i_math: +?S: This variable conditionally defines the I_MATH symbol, and indicates +?S: whether a C program may include <math.h>. +?S:. +?C:I_MATH: +?C: This symbol, if defined, indicates to the C program that it should +?C: include <math.h>. +?C:. +?H:#$i_math I_MATH /**/ +?H:. +?LINT:set i_math +: see if this is a math.h system +set math.h i_math +eval $inhdr + +: see whether we need libm +$cat >try.c <<EOC +#$i_math I_MATH +#ifdef I_MATH +#include <math.h> +#endif +int main(void) +{ + static double ret; + + ret += 1.2 * pow(1.2, 1.2); + ret += 1.2 * sqrt(ret); + return 0 != ret; +} +EOC +set val '-lm' +eval $trylink + |