Cleanup rint() portability checks

1 files changed, 0 insertions, 35 deletions

diff --git a/include/my_global.h b/include/my_global.h
index 65e10373d3b..05c6d02f390 100644
--- a/include/my_global.h
+++ b/include/my_global.h
@@ -1179,41 +1179,6 @@ typedef struct { const char *dli_fname, dli_fbase; } Dl_info;
 #endif
 #endif /* !defined(__func__) */
 
-#ifndef HAVE_RINT
-/**
-   All integers up to this number can be represented exactly as double precision
-   values (DBL_MANT_DIG == 53 for IEEE 754 hardware).
-*/
-#define MAX_EXACT_INTEGER ((1LL << DBL_MANT_DIG) - 1)
-
-/**
-   rint(3) implementation for platforms that do not have it.
-   Always rounds to the nearest integer with ties being rounded to the nearest
-   even integer to mimic glibc's rint() behavior in the "round-to-nearest"
-   FPU mode. Hardware-specific optimizations are possible (frndint on x86).
-   Unlike this implementation, hardware will also honor the FPU rounding mode.
-*/
-
-static inline double rint(double x)
-{
-  double f, i;
-  f = modf(x, &i);
-  /*
-    All doubles with absolute values > MAX_EXACT_INTEGER are even anyway,
-    no need to check it.
-  */
-  if (x > 0.0)
-    i += (double) ((f > 0.5) || (f == 0.5 &&
-                                 i <= (double) MAX_EXACT_INTEGER &&
-                                 (longlong) i % 2));
-  else
-    i -= (double) ((f < -0.5) || (f == -0.5 &&
-                                  i >= (double) -MAX_EXACT_INTEGER &&
-                                  (longlong) i % 2));
-  return i;
-}
-#endif /* HAVE_RINT */
-
 /* 
   MYSQL_PLUGIN_IMPORT macro is used to export mysqld data
   (i.e variables) for usage in storage engine loadable plugins.