Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / powerpc / powerpc32 / fpu / s_llrintf.c

diff --git a/sysdeps/powerpc/powerpc32/fpu/s_llrintf.c b/sysdeps/powerpc/powerpc32/fpu/s_llrintf.c
index 394962d365fc24ab3cb8568679f20c1b56aa258d..021a86fadaf68e2a12910cafe23380c40b005c8c 100644 (file)
--- a/sysdeps/powerpc/powerpc32/fpu/s_llrintf.c
+++ b/sysdeps/powerpc/powerpc32/fpu/s_llrintf.c
@@ -1,5 +1,5 @@
 /* Round a float value to a long long in the current rounding mode.
-   Copyright (C) 1997-2014 Free Software Foundation, Inc.
+   Copyright (C) 1997-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -17,10 +17,31 @@
    <http://www.gnu.org/licenses/>.  */
 
 #include <math.h>
+#include <math_private.h>
+#include <stdint.h>
+#include <libm-alias-float.h>
 
 long long int
 __llrintf (float x)
 {
-  return (long long int) __rintf (x);
+  float rx = rintf (x);
+  if (HAVE_PPC_FCTIDZ || rx != x)
+    return (long long int) rx;
+  else
+    {
+      float arx = fabsf (rx);
+      /* Avoid incorrect exceptions from libgcc conversions (as of GCC
+        5): <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59412>.  */
+      if (arx < 0x1p31f)
+       return (long long int) (long int) rx;
+      else if (!(arx < 0x1p55f))
+       return (long long int) (long int) (rx * 0x1p-32f) << 32;
+      uint32_t i0;
+      GET_FLOAT_WORD (i0, rx);
+      int exponent = ((i0 >> 23) & 0xff) - 0x7f;
+      unsigned long long int mant = (i0 & 0x7fffff) | 0x800000;
+      mant <<= exponent - 23;
+      return (long long int) ((i0 & 0x80000000) != 0 ? -mant : mant);
+    }
 }
-weak_alias (__llrintf, llrintf)
+libm_alias_float (__llrint, llrint)