updating README.macosx to reflect current systems.

[perl5.git] / vos / vos.c

diff --git a/vos/vos.c b/vos/vos.c
index c3566d4..0b3c334 100644 (file)
--- a/vos/vos.c
+++ b/vos/vos.c
@@ -1,14 +1,28 @@
 /* Beginning of modification history */
 /* Written 02-01-02 by Nick Ing-Simmons (nick@ing-simmons.net) */
+/* Modified 02-03-27 by Paul Green (Paul.Green@stratus.com) to
+     add socketpair() dummy. */
+/* Modified 02-04-24 by Paul Green (Paul.Green@stratus.com) to
+     have pow(0,0) return 1, avoiding c-1471. */
+/* Modified 06-09-25 by Paul Green (Paul.Green@stratus.com) to
+     add syslog entries. */
+/* Modified 08-02-04 by Paul Green (Paul.Green@stratus.com) to
+     open the syslog file in the working dir. */
+/* Modified 11-10-17 by Paul Green to remove the dummy copies
+     of socketpair() and the syslog functions. */
 /* End of modification history */
 
-/* VOS doesn't supply a truncate function, so we build one up
-   from the available POSIX functions.  */
-
+#include <errno.h>
 #include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include <sys/types.h>
 #include <unistd.h>
 
+/* VOS doesn't supply a truncate function, so we build one up
+   from the available POSIX functions.  */
+
 int
 truncate(const char *path, off_t len)
 {
@@ -20,3 +34,22 @@ truncate(const char *path, off_t len)
  }
  return code;
 }
+
+/* Supply a private version of the power function that returns 1
+   for x**0.  This avoids c-1471.  Abigail's Japh tests depend
+   on this fix.  We leave all the other cases to the VOS C
+   runtime.  */
+
+double s_crt_pow(double *x, double *y);
+
+double pow(x,y)
+double x, y;
+{
+     if (y == 0e0)                 /* c-1471 */
+     {
+          errno = EDOM;
+          return (1e0);
+     }
+
+     return(s_crt_pow(&x,&y));
+}