This reverts commit
d1671548b968103f4df1b80659e60ae1fc5a67b3.
You get following errors while compiling freeswitch:
awgn.c: In function 'awgn_init_dbov': awgn.c:110:5: error: void value not ignored as it ought to be s->rms = pow(10.0, level/20.0)*32768.0;
Reverting this commit allows to build the code.
/* 1 if 'type' is a floating type, 0 if 'type' is an integer type.
Allows for _Bool. Expands to an integer constant expression. */
-# if 0 /* __GNUC_PREREQ (3, 1) */
+# if __GNUC_PREREQ (3, 1)
# define __floating_type(type) \
(__builtin_classify_type ((type) 0) == 8 \
|| (__builtin_classify_type ((type) 0) == 9 \