diff options
Diffstat (limited to 'src/backend')
| -rw-r--r-- | src/backend/port/isinf.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/src/backend/port/isinf.c b/src/backend/port/isinf.c index 1fa31f82634..e2193267073 100644 --- a/src/backend/port/isinf.c +++ b/src/backend/port/isinf.c @@ -1,18 +1,12 @@ -/* $Id: isinf.c,v 1.10 1999/07/18 17:38:23 momjian Exp $ */ +/* $Id: isinf.c,v 1.11 1999/07/18 20:43:12 momjian Exp $ */ #include <math.h> - #include "config.h" -#ifdef NOT_USED - +#if HAVE_FPCLASS #if HAVE_IEEEFP_H #include <ieeefp.h> #endif -#if HAVE_FP_CLASS_H -#include <fp_class.h> -#endif - int isinf(double d) { @@ -29,6 +23,12 @@ isinf(double d) return 0; } +#else + +#if defined(HAVE_FP_CLASS) || defined(HAVE_FP_CLASS_D) +#if HAVE_FP_CLASS_H +#include <fp_class.h> +#endif int isinf(x) double x; @@ -49,3 +49,19 @@ double x; } #endif +#endif + +#if defined(HAVE_CLASS) +int +isinf(double x) +{ + int fpclass = class(x); + + if (fpclass == FP_PLUS_INF) + return 1; + if (fpclass == FP_MINUS_INF) + return -1; + return 0; +} + +#endif |