[avr-libc-commit] [2251] bug #34047: missing math.h include in delay.h

[Joerg Wunsch]

Revision: 2251
          http://svn.sv.gnu.org/viewvc/?view=rev&root=avr-libc&revision=2251
Author:   joerg_wunsch
Date:     2011-09-14 08:20:33 +0000 (Wed, 14 Sep 2011)
Log Message:
-----------
bug #34047: missing math.h include in delay.h

Include <math.h>.

Ticket Links:
------------
    http://savannah.gnu.org/bugs/?34047

Modified Paths:
--------------
    trunk/avr-libc/ChangeLog
    trunk/avr-libc/NEWS
    trunk/avr-libc/include/util/delay.h.in

Modified: trunk/avr-libc/ChangeLog
===================================================================
--- trunk/avr-libc/ChangeLog    2011-09-14 08:17:34 UTC (rev 2250)
+++ trunk/avr-libc/ChangeLog    2011-09-14 08:20:33 UTC (rev 2251)
@@ -1,5 +1,10 @@
 2011-09-14  Joerg Wunsch <address@hidden>
 
+       bug #34047: missing math.h include in delay.h
+       * util/delay.h.in: include <math.h>
+
+2011-09-14  Joerg Wunsch <address@hidden>
+
        * util/delay.h.in: Fall back to the historic algorithm when
        compiling within a freestanding environment.
 

Modified: trunk/avr-libc/NEWS
===================================================================
--- trunk/avr-libc/NEWS 2011-09-14 08:17:34 UTC (rev 2250)
+++ trunk/avr-libc/NEWS 2011-09-14 08:20:33 UTC (rev 2251)
@@ -14,6 +14,7 @@
   [#33130] twitest.c source code is broken
   [#33230] Sleep modes have incorrect names for ATtiny261/461/861
   [#33238] Wrong _VECTORS_SIZE for mega8U2 et al
+  [#34047] missing math.h include in delay.h
   [no-id]  New names for CLKSTA/CLKSEL0/1 for AT90USB82/162
   system when power_all_disable() is used
   [no-id]  util/delay.h would not compile with -ffreestanding

Modified: trunk/avr-libc/include/util/delay.h.in
===================================================================
--- trunk/avr-libc/include/util/delay.h.in      2011-09-14 08:17:34 UTC (rev 
2250)
+++ trunk/avr-libc/include/util/delay.h.in      2011-09-14 08:20:33 UTC (rev 
2251)
@@ -95,6 +95,12 @@
 # warning "Compiler optimizations disabled; functions from <util/delay.h> 
won't work as designed"
 #endif
 
+#if __HAS_DELAY_CYCLES && defined(__OPTIMIZE__) && \
+  !defined(__DELAY_BACKWARD_COMPATIBLE__) &&      \
+  __STDC_HOSTED__
+#  include <math.h>
+#endif
+
 /**
    \ingroup util_delay