diff --git a/nptl/lowlevellock.c b/nptl/lowlevellock.c
index e198af7..4c093fc 100644
--- a/nptl/lowlevellock.c
+++ b/nptl/lowlevellock.c
@@ -35,7 +35,7 @@ __lll_lock_wait_private (int *futex)
 
 
 /* These functions don't get included in libc.so  */
-#ifdef IS_IN_libpthread
+#if IS_IN (libpthread)
 void
 __lll_lock_wait (int *futex, int private)
 {
diff --git a/nptl/pthreadP.h b/nptl/pthreadP.h
index 2f13ea5..d75aeac 100644
--- a/nptl/pthreadP.h
+++ b/nptl/pthreadP.h
@@ -238,7 +238,7 @@ extern int __pthread_debug attribute_hidden;
 
 extern void __pthread_unwind (__pthread_unwind_buf_t *__buf)
      __cleanup_fct_attribute __attribute ((__noreturn__))
-#if !defined SHARED && !defined IS_IN_libpthread
+#if !defined SHARED && !IS_IN (libpthread)
      weak_function
 #endif
      ;
@@ -252,7 +252,7 @@ extern void __pthread_register_cancel (__pthread_unwind_buf_t *__buf)
      __cleanup_fct_attribute;
 extern void __pthread_unregister_cancel (__pthread_unwind_buf_t *__buf)
      __cleanup_fct_attribute;
-#ifdef IS_IN_libpthread
+#if IS_IN (libpthread)
 hidden_proto (__pthread_unwind)
 hidden_proto (__pthread_unwind_next)
 hidden_proto (__pthread_register_cancel)
@@ -296,7 +296,7 @@ __do_cancel (void)
 # define LIBC_CANCEL_HANDLED() \
   __asm (".globl " __SYMBOL_PREFIX "__libc_enable_asynccancel"); \
   __asm (".globl " __SYMBOL_PREFIX "__libc_disable_asynccancel")
-#elif defined IS_IN_libpthread
+#elif IS_IN (libpthread)
 # define LIBC_CANCEL_ASYNC() CANCEL_ASYNC ()
 # define LIBC_CANCEL_RESET(val) CANCEL_RESET (val)
 # define LIBC_CANCEL_HANDLED() \
@@ -341,7 +341,7 @@ extern int __make_stacks_executable (void **stack_endp)
 
 /* longjmp handling.  */
 extern void __pthread_cleanup_upto (__jmp_buf target, char *targetframe);
-#ifdef IS_IN_libpthread
+#if IS_IN (libpthread)
 hidden_proto (__pthread_cleanup_upto)
 #endif
 
@@ -486,7 +486,7 @@ extern int __pthread_enable_asynccancel (void) attribute_hidden;
 extern void __pthread_disable_asynccancel (int oldtype)
      internal_function attribute_hidden;
 
-#ifdef IS_IN_libpthread
+#if IS_IN (libpthread)
 hidden_proto (__pthread_mutex_init)
 hidden_proto (__pthread_mutex_destroy)
 hidden_proto (__pthread_mutex_lock)
@@ -525,7 +525,7 @@ extern int __librt_enable_asynccancel (void) attribute_hidden;
 extern void __librt_disable_asynccancel (int oldtype)
      internal_function attribute_hidden;
 
-#ifdef IS_IN_libpthread
+#if IS_IN (libpthread)
 /* Special versions which use non-exported functions.  */
 extern void __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
 				    void (*routine) (void *), void *arg)
diff --git a/nptl_db/structs.def b/nptl_db/structs.def
index ec72ef1..5b905e2 100644
--- a/nptl_db/structs.def
+++ b/nptl_db/structs.def
@@ -74,7 +74,7 @@ DB_STRUCT_FIELD (link_map, l_tls_modid)
 DB_STRUCT_ARRAY_FIELD (dtv, dtv)
 #define pointer_val pointer.val /* Field of anonymous struct in dtv_t.  */
 DB_STRUCT_FIELD (dtv_t, pointer_val)
-#if !defined IS_IN_libpthread || TLS_TCB_AT_TP
+#if !IS_IN (libpthread) || TLS_TCB_AT_TP
 DB_STRUCT_FIELD (pthread, dtvp)
 #endif
 
diff --git a/sysdeps/arm/sysdep.h b/sysdeps/arm/sysdep.h
index 4c41213..f476d69 100644
--- a/sysdeps/arm/sysdep.h
+++ b/sysdeps/arm/sysdep.h
@@ -293,7 +293,7 @@
 
 /* Pointer mangling support.  */
 #if (defined IS_IN_rtld || \
-     (!defined SHARED && (!defined NOT_IN_libc || defined IS_IN_libpthread)))
+     (!defined SHARED && (!defined NOT_IN_libc || IS_IN (libpthread))))
 # ifdef __ASSEMBLER__
 #  define PTR_MANGLE_LOAD(guard, tmp)					\
   LDST_PCREL(ldr, guard, tmp, C_SYMBOL_NAME(__pointer_chk_guard_local));
diff --git a/sysdeps/nptl/bits/libc-lock.h b/sysdeps/nptl/bits/libc-lock.h
index 532cf2c..b782b98 100644
--- a/sysdeps/nptl/bits/libc-lock.h
+++ b/sysdeps/nptl/bits/libc-lock.h
@@ -26,7 +26,7 @@
 
 /* Mutex type.  */
 #if defined _LIBC || defined _IO_MTSAFE_IO
-# if (defined NOT_IN_libc && !defined IS_IN_libpthread) || !defined _LIBC
+# if (defined NOT_IN_libc && !IS_IN (libpthread)) || !defined _LIBC
 typedef struct { pthread_mutex_t mutex; } __libc_lock_recursive_t;
 # else
 typedef struct { int lock; int cnt; void *owner; } __libc_lock_recursive_t;
@@ -47,7 +47,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 
 /* Define an initialized recursive lock variable NAME with storage
    class CLASS.  */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
 # define __libc_lock_define_initialized_recursive(CLASS, NAME) \
   CLASS __libc_lock_recursive_t NAME = _LIBC_LOCK_RECURSIVE_INITIALIZER;
 # define _LIBC_LOCK_RECURSIVE_INITIALIZER \
@@ -60,7 +60,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Initialize a recursive mutex.  */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
 # define __libc_lock_init_recursive(NAME) \
   ((NAME) = (__libc_lock_recursive_t) _LIBC_LOCK_RECURSIVE_INITIALIZER, 0)
 #else
@@ -78,7 +78,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Finalize recursive named lock.  */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
 # define __libc_lock_fini_recursive(NAME) ((void) 0)
 #else
 # define __libc_lock_fini_recursive(NAME) \
@@ -86,7 +86,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Lock the recursive named lock variable.  */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
 # define __libc_lock_lock_recursive(NAME) \
   do {									      \
     void *self = THREAD_SELF;						      \
@@ -103,7 +103,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Try to lock the recursive named lock variable.  */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
 # define __libc_lock_trylock_recursive(NAME) \
   ({									      \
     int result = 0;							      \
@@ -128,7 +128,7 @@ typedef struct __libc_lock_recursive_opaque__ __libc_lock_recursive_t;
 #endif
 
 /* Unlock the recursive named lock variable.  */
-#if defined _LIBC && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+#if defined _LIBC && (!defined NOT_IN_libc || IS_IN (libpthread))
 /* We do no error checking here.  */
 # define __libc_lock_unlock_recursive(NAME) \
   do {									      \
diff --git a/sysdeps/nptl/bits/libc-lockP.h b/sysdeps/nptl/bits/libc-lockP.h
index ec20271..c84e778 100644
--- a/sysdeps/nptl/bits/libc-lockP.h
+++ b/sysdeps/nptl/bits/libc-lockP.h
@@ -35,7 +35,7 @@
 #include <pthread-functions.h>
 
 /* Mutex type.  */
-#if defined NOT_IN_libc && !defined IS_IN_libpthread
+#if defined NOT_IN_libc && !IS_IN (libpthread)
 typedef pthread_mutex_t __libc_lock_t;
 #else
 typedef int __libc_lock_t;
@@ -69,7 +69,7 @@ typedef pthread_key_t __libc_key_t;
    initialized locks must be set to one due to the lack of normal
    atomic operations.) */
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread
+#if !defined NOT_IN_libc || IS_IN (libpthread)
 # if LLL_LOCK_INITIALIZER == 0
 #  define __libc_lock_define_initialized(CLASS,NAME) \
   CLASS __libc_lock_t NAME;
@@ -125,7 +125,7 @@ typedef pthread_key_t __libc_key_t;
 
 /* Initialize the named lock variable, leaving it in a consistent, unlocked
    state.  */
-#if !defined NOT_IN_libc || defined IS_IN_libpthread
+#if !defined NOT_IN_libc || IS_IN (libpthread)
 # define __libc_lock_init(NAME) ((NAME) = LLL_LOCK_INITIALIZER, 0)
 #else
 # define __libc_lock_init(NAME) \
@@ -144,7 +144,7 @@ typedef pthread_key_t __libc_key_t;
 /* Finalize the named lock variable, which must be locked.  It cannot be
    used again until __libc_lock_init is called again on it.  This must be
    called on a lock variable before the containing storage is reused.  */
-#if !defined NOT_IN_libc || defined IS_IN_libpthread
+#if !defined NOT_IN_libc || IS_IN (libpthread)
 # define __libc_lock_fini(NAME) ((void) 0)
 #else
 # define __libc_lock_fini(NAME) \
@@ -158,7 +158,7 @@ typedef pthread_key_t __libc_key_t;
 #endif
 
 /* Lock the named lock variable.  */
-#if !defined NOT_IN_libc || defined IS_IN_libpthread
+#if !defined NOT_IN_libc || IS_IN (libpthread)
 # ifndef __libc_lock_lock
 #  define __libc_lock_lock(NAME) \
   ({ lll_lock (NAME, LLL_PRIVATE); 0; })
@@ -174,7 +174,7 @@ typedef pthread_key_t __libc_key_t;
   __libc_ptf_call (__pthread_rwlock_wrlock, (&(NAME)), 0)
 
 /* Try to lock the named lock variable.  */
-#if !defined NOT_IN_libc || defined IS_IN_libpthread
+#if !defined NOT_IN_libc || IS_IN (libpthread)
 # ifndef __libc_lock_trylock
 #  define __libc_lock_trylock(NAME) \
   lll_trylock (NAME)
@@ -193,7 +193,7 @@ typedef pthread_key_t __libc_key_t;
   __libc_maybe_call (__pthread_mutex_trylock, (&(NAME).mutex), 0)
 
 /* Unlock the named lock variable.  */
-#if !defined NOT_IN_libc || defined IS_IN_libpthread
+#if !defined NOT_IN_libc || IS_IN (libpthread)
 # define __libc_lock_unlock(NAME) \
   lll_unlock (NAME, LLL_PRIVATE)
 #else
diff --git a/sysdeps/sparc/sparc32/lowlevellock.c b/sysdeps/sparc/sparc32/lowlevellock.c
index 8384281..78cfad9 100644
--- a/sysdeps/sparc/sparc32/lowlevellock.c
+++ b/sysdeps/sparc/sparc32/lowlevellock.c
@@ -37,7 +37,7 @@ __lll_lock_wait_private (int *futex)
 
 
 /* These functions don't get included in libc.so  */
-#ifdef IS_IN_libpthread
+#if IS_IN (libpthread)
 void
 __lll_lock_wait (int *futex, int private)
 {
diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h
index 17dad91..68b06e1 100644
--- a/sysdeps/unix/alpha/sysdep.h
+++ b/sysdeps/unix/alpha/sysdep.h
@@ -373,7 +373,7 @@ __LABEL(name)						\
 # include <stdint.h>
 # if (defined IS_IN_rtld \
       || (!defined SHARED && (!defined NOT_IN_libc \
-			      || defined IS_IN_libpthread)))
+			      || IS_IN (libpthread))))
 extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;
 #  define PTR_MANGLE(var) \
 	(var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)
diff --git a/sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h
index 9e347de..f2f8009 100644
--- a/sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				\
@@ -81,7 +81,7 @@ ENTRY (name);								\
 # define UNDOCARGS_5	UNDOCARGS_3; ldp x3, x4, [sp, 32]
 # define UNDOCARGS_6	UNDOCARGS_4; ldp x4, x5, [sp, 40]
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	bl __pthread_enable_asynccancel
 #  define CDISABLE	bl __pthread_disable_asynccancel
 #  define __local_multiple_threads __pthread_multiple_threads
@@ -96,7 +96,7 @@ ENTRY (name);								\
 #  error Unsupported library
 # endif
 
-# if defined IS_IN_libpthread || !defined NOT_IN_libc
+# if IS_IN (libpthread) || !defined NOT_IN_libc
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
diff --git a/sysdeps/unix/sysv/linux/aarch64/sysdep.h b/sysdeps/unix/sysv/linux/aarch64/sysdep.h
index 84999f1..84bec80 100644
--- a/sysdeps/unix/sysv/linux/aarch64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/aarch64/sysdep.h
@@ -311,7 +311,7 @@
 /* Pointer mangling is supported for AArch64.  */
 #if (defined IS_IN_rtld || \
      (!defined SHARED && (!defined NOT_IN_libc \
-			  || defined IS_IN_libpthread)))
+			  || IS_IN (libpthread))))
 # ifdef __ASSEMBLER__
 #  define PTR_MANGLE(dst, src, guard, tmp)                                \
   LDST_PCREL (ldr, guard, tmp, C_SYMBOL_NAME(__pointer_chk_guard_local)); \
diff --git a/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h b/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
index 45bf93b..5479556 100644
--- a/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h
@@ -21,7 +21,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 /* ??? Assumes that nothing comes between PSEUDO and PSEUDO_END
    besides "ret".  */
@@ -113,7 +113,7 @@ __LABEL($multi_error)						\
 # define LOAD_ARGS_5	LOAD_ARGS_4; ldq a4, 40(sp)
 # define LOAD_ARGS_6	LOAD_ARGS_5; ldq a5, 48(sp)
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define __local_enable_asynccancel	__pthread_enable_asynccancel
 #  define __local_disable_asynccancel	__pthread_disable_asynccancel
 #  define __local_multiple_threads	__pthread_multiple_threads
@@ -136,7 +136,7 @@ __LABEL($multi_error)						\
 #  define CDISABLE	jsr ra, __local_disable_asynccancel; ldgp ra, 0(gp)
 # endif
 
-# if defined IS_IN_libpthread || !defined NOT_IN_libc
+# if IS_IN (libpthread) || !defined NOT_IN_libc
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P \
diff --git a/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h b/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
index e5a8e36..9211d04 100644
--- a/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
@@ -21,7 +21,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 /* NOTE: We do mark syscalls with unwind annotations, for the benefit of
    cancellation; but they're really only accurate at the point of the
@@ -181,7 +181,7 @@
 # define RESTORE_LR_6				\
 	RESTORE_LR_0
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	bl PLTJMP(__pthread_enable_asynccancel)
 #  define CDISABLE	bl PLTJMP(__pthread_disable_asynccancel)
 #  define __local_multiple_threads __pthread_multiple_threads
@@ -196,7 +196,7 @@
 #  error Unsupported library
 # endif
 
-# if defined IS_IN_libpthread || !defined NOT_IN_libc
+# if IS_IN (libpthread) || !defined NOT_IN_libc
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
diff --git a/sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h b/sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h
index 365237e..5d4ff34 100644
--- a/sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # ifndef NO_ERROR
 #  define NO_ERROR -0x1000
@@ -204,7 +204,7 @@ L(pre_end):						ASM_LINE_SEP	\
 # define POPARGS_6	POPARGS_5 ldw -56(%sr0,%sp), %r21	ASM_LINE_SEP	\
 			.cfi_restore 21				ASM_LINE_SEP
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  ifdef PIC
 #   define CENABLE .import __pthread_enable_asynccancel,code ASM_LINE_SEP \
 			bl __pthread_enable_asynccancel,%r2 ASM_LINE_SEP
@@ -244,7 +244,7 @@ L(pre_end):						ASM_LINE_SEP	\
 #  error Unsupported library
 # endif
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define __local_multiple_threads __pthread_multiple_threads
 # elif !defined NOT_IN_libc
 #  define __local_multiple_threads __libc_multiple_threads
@@ -271,7 +271,7 @@ L(pre_end):						ASM_LINE_SEP	\
 # define NO_CANCELLATION 1
 
 #endif
-/* !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt) */
+/* !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt) */
 
 #ifndef __ASSEMBLER__
 # define RTLD_SINGLE_THREAD_P \
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h b/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
index 75fe2e6..c17ff6c 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				      \
@@ -108,7 +108,7 @@
 # define _POPCARGS_6	_POPCARGS_5; popl %ebp; \
 			cfi_adjust_cfa_offset (-4); cfi_restore (ebp);
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	call __pthread_enable_asynccancel;
 #  define CDISABLE	call __pthread_disable_asynccancel
 # elif !defined NOT_IN_libc
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 57d5ea0..0282761 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -34,7 +34,7 @@
 #define SYS_ify(syscall_name)	__NR_##syscall_name
 
 #if defined USE_DL_SYSINFO \
-    && (!defined NOT_IN_libc || defined IS_IN_libpthread)
+    && (!defined NOT_IN_libc || IS_IN (libpthread))
 # define I386_USE_SYSENTER	1
 #else
 # undef I386_USE_SYSENTER
diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
index 366728f..0458fce 100644
--- a/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 
@@ -179,7 +179,7 @@ __GC_##name:								      \
 # undef PSEUDO_END
 # define PSEUDO_END(name) .endp
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	br.call.sptk.many b0 = __pthread_enable_asynccancel
 #  define CDISABLE	br.call.sptk.many b0 = __pthread_disable_asynccancel
 # elif !defined NOT_IN_libc
diff --git a/sysdeps/unix/sysv/linux/ia64/sysdep.h b/sysdeps/unix/sysv/linux/ia64/sysdep.h
index 49d289c..47fd577 100644
--- a/sysdeps/unix/sysv/linux/ia64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/ia64/sysdep.h
@@ -62,7 +62,7 @@
 
 #if defined USE_DL_SYSINFO \
 	&& (!defined NOT_IN_libc \
-	    || defined IS_IN_libpthread || IS_IN (librt))
+	    || IS_IN (libpthread) || IS_IN (librt))
 # define IA64_USE_NEW_STUB
 #else
 # undef IA64_USE_NEW_STUB
diff --git a/sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h b/sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h
index 0e19a38..33ce922 100644
--- a/sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				      \
@@ -100,7 +100,7 @@
 #  define PSEUDO_JMP(sym) jbsr sym
 # endif
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	PSEUDO_JMP (__pthread_enable_asynccancel)
 #  define CDISABLE	PSEUDO_JMP (__pthread_disable_asynccancel)
 # elif !defined NOT_IN_libc
diff --git a/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h b/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
index 4d371ef..0fe5b12 100644
--- a/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h
@@ -21,7 +21,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # if !IS_IN (librt) || !defined(PIC)
 #  define AC_STACK_SIZE  16  /* space for r15, async_cancel arg and 2 temp words */
@@ -102,7 +102,7 @@ L(pseudo_cancel):                                                    \
 #  define PSEUDO_JMP(sym)  brlid r15, sym; addk r0, r0, r0
 # endif
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE PSEUDO_JMP (__pthread_enable_asynccancel)
 #  define CDISABLE  PSEUDO_JMP (__pthread_disable_asynccancel)
 #  define __local_multiple_threads __pthread_multiple_threads
@@ -118,7 +118,7 @@ L(pseudo_cancel):                                                    \
 # endif
 
 
-# if defined IS_IN_libpthread || !defined NOT_IN_libc
+# if IS_IN (libpthread) || !defined NOT_IN_libc
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h
index acbc5da..6f79b14 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h
@@ -27,7 +27,7 @@
    happen before any instructions.  So we use cfi_same_value instead of
    cfi_restore.  */
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 #ifdef __PIC__
 # undef PSEUDO
@@ -213,7 +213,7 @@
 #  define PSEUDO_JMP(sym) jal sym
 # endif
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	PSEUDO_JMP (__pthread_enable_asynccancel)
 #  define CDISABLE	PSEUDO_JMP (__pthread_disable_asynccancel)
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/mips/sysdep-cancel.h b/sysdeps/unix/sysv/linux/mips/sysdep-cancel.h
index 5fdd567..1d711f7 100644
--- a/sysdeps/unix/sysv/linux/mips/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/mips/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # ifdef __PIC__
 #  define PSEUDO_CPLOAD .cpload t9;
@@ -154,7 +154,7 @@
 #  define PSEUDO_JMP(sym) jal sym;
 # endif
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	PSEUDO_JMP (__pthread_enable_asynccancel)
 #  define CDISABLE	PSEUDO_JMP (__pthread_disable_asynccancel)
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h
index d089531..1d65f20 100644
--- a/sysdeps/unix/sysv/linux/not-cancel.h
+++ b/sysdeps/unix/sysv/linux/not-cancel.h
@@ -19,7 +19,7 @@
 
 #include <sysdep.h>
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 extern int __open_nocancel (const char *, int, ...) attribute_hidden;
 extern int __close_nocancel (int) attribute_hidden;
 extern int __read_nocancel (int, void *, size_t) attribute_hidden;
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
index 962beaf..25bf797 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
@@ -23,7 +23,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				\
@@ -81,7 +81,7 @@
 # define DOCARGS_6	stw 8,40(1); DOCARGS_5
 # define UNDOCARGS_6	lwz 8,40(1); UNDOCARGS_5
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	bl __pthread_enable_asynccancel@local
 #  define CDISABLE	bl __pthread_disable_asynccancel@local
 # elif !defined NOT_IN_libc
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
index 0447062..8683b6b 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
@@ -23,7 +23,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # ifdef HAVE_ASM_GLOBAL_DOT_NAME
 #  define DASHDASHPFX(str) .__##str
@@ -99,7 +99,7 @@
 # define DOCARGS_6	std 8,CANCEL_PARM_SAVE+40(1); DOCARGS_5
 # define UNDOCARGS_6	ld 8,CANCEL_PARM_SAVE+40(1); UNDOCARGS_5
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  ifdef SHARED
 #   define CENABLE	bl JUMPTARGET(__pthread_enable_asynccancel)
 #   define CDISABLE	bl JUMPTARGET(__pthread_disable_asynccancel)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
index bc5d852..d19500d 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				      \
@@ -75,7 +75,7 @@ L(pseudo_check):							      \
 .size	__##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	      \
 L(pseudo_end):
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	__pthread_enable_asynccancel
 #  define CDISABLE	__pthread_disable_asynccancel
 # elif !defined NOT_IN_libc
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
index 885bf7e..9622d5a 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)				      \
@@ -69,7 +69,7 @@ L(pseudo_check):							      \
 .size	__##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	      \
 L(pseudo_end):
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	__pthread_enable_asynccancel
 #  define CDISABLE	__pthread_disable_asynccancel
 #  define __local_multiple_threads	__pthread_multiple_threads
@@ -111,7 +111,7 @@ L(pseudo_end):
 #define LR7_6		lg %r7,56+160(%r15); \
 			cfi_restore (%r7);
 
-# if defined IS_IN_libpthread || !defined NOT_IN_libc
+# if IS_IN (libpthread) || !defined NOT_IN_libc
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P \
diff --git a/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h b/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
index 4ef51c0..131f42b 100644
--- a/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h
@@ -21,7 +21,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # define _IMM12 #-12
 # define _IMM16 #-16
@@ -105,7 +105,7 @@
 # define LOAD_ARGS_5	LOAD_ARGS_4
 # define LOAD_ARGS_6	LOAD_ARGS_5
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define __local_enable_asynccancel	__pthread_enable_asynccancel
 #  define __local_disable_asynccancel	__pthread_disable_asynccancel
 # elif !defined NOT_IN_libc
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h
index 2e24d2a..cc7adfc 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)	\
@@ -68,7 +68,7 @@ __##syscall_name##_nocancel:			\
 	 restore %g0, %l1, %o0;
 
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	call __pthread_enable_asynccancel
 #  define CDISABLE	call __pthread_disable_asynccancel
 # elif !defined NOT_IN_libc
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
index 0ae3b61..aee3dee 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 # undef PSEUDO
 # define PSEUDO(name, syscall_name, args)	\
@@ -66,7 +66,7 @@ __##syscall_name##_nocancel:			\
 2:	jmpl %i7 + 8, %g0;			\
 	 restore %g0, %l1, %o0;
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	call __pthread_enable_asynccancel
 #  define CDISABLE	call __pthread_disable_asynccancel
 # elif !defined NOT_IN_libc
diff --git a/sysdeps/unix/sysv/linux/tile/sysdep-cancel.h b/sysdeps/unix/sysv/linux/tile/sysdep-cancel.h
index 8140273..028c393 100644
--- a/sysdeps/unix/sysv/linux/tile/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/tile/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 /* Allow hacking in some extra code if desired. */
 #ifndef PSEUDO_EXTRA
@@ -117,7 +117,7 @@
 
 # define STKSPACE	(13 * REGSIZE)
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	jal __pthread_enable_asynccancel
 #  define CDISABLE	jal __pthread_disable_asynccancel
 # elif IS_IN (librt)
diff --git a/sysdeps/unix/sysv/linux/tile/sysdep.h b/sysdeps/unix/sysv/linux/tile/sysdep.h
index a09f8a4..191f95a 100644
--- a/sysdeps/unix/sysv/linux/tile/sysdep.h
+++ b/sysdeps/unix/sysv/linux/tile/sysdep.h
@@ -45,7 +45,7 @@
 #ifndef PIC
 /* For static code, on error jump to __syscall_error directly. */
 # define SYSCALL_ERROR_NAME __syscall_error
-#elif !defined NOT_IN_libc || defined IS_IN_libpthread
+#elif !defined NOT_IN_libc || IS_IN (libpthread)
 /* Use the internal name for libc/libpthread shared objects. */
 # define SYSCALL_ERROR_NAME __GI___syscall_error
 #else
diff --git a/sysdeps/unix/sysv/linux/tile/waitpid.S b/sysdeps/unix/sysv/linux/tile/waitpid.S
index ac8e59e..e613b1c 100644
--- a/sysdeps/unix/sysv/linux/tile/waitpid.S
+++ b/sysdeps/unix/sysv/linux/tile/waitpid.S
@@ -1,7 +1,7 @@
 /*
 extern pid_t __waitpid_nocancel (pid_t, int *, int) attribute_hidden;
 */
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 /* Call __NR_wait4, providing fourth argument (struct rusage *) as NULL. */
 #define PSEUDO_EXTRA move r3, zero;
diff --git a/sysdeps/unix/sysv/linux/x86_64/cancellation.S b/sysdeps/unix/sysv/linux/x86_64/cancellation.S
index 89fda5e..5189bbc 100644
--- a/sysdeps/unix/sysv/linux/x86_64/cancellation.S
+++ b/sysdeps/unix/sysv/linux/x86_64/cancellation.S
@@ -21,7 +21,7 @@
 #include <kernel-features.h>
 #include "lowlevellock.h"
 
-#ifdef IS_IN_libpthread
+#if IS_IN (libpthread)
 # if defined SHARED && !defined NO_HIDDEN
 #  define __pthread_unwind __GI___pthread_unwind
 # endif
diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h
index efdb1c6..2667292 100644
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h
@@ -22,7 +22,7 @@
 # include <nptl/pthreadP.h>
 #endif
 
-#if !defined NOT_IN_libc || defined IS_IN_libpthread || IS_IN (librt)
+#if !defined NOT_IN_libc || IS_IN (libpthread) || IS_IN (librt)
 
 /* The code to disable cancellation depends on the fact that the called
    functions are special.  They don't modify registers other than %rax
@@ -59,7 +59,7 @@
     jae SYSCALL_ERROR_LABEL
 
 
-# ifdef IS_IN_libpthread
+# if IS_IN (libpthread)
 #  define CENABLE	call __pthread_enable_asynccancel;
 #  define CDISABLE	call __pthread_disable_asynccancel;
 #  define __local_multiple_threads __pthread_multiple_threads
@@ -74,7 +74,7 @@
 #  error Unsupported library
 # endif
 
-# if defined IS_IN_libpthread || !defined NOT_IN_libc
+# if IS_IN (libpthread) || !defined NOT_IN_libc
 #  ifndef __ASSEMBLER__
 extern int __local_multiple_threads attribute_hidden;
 #   define SINGLE_THREAD_P \
