Expunge #ifdef and #ifndef from the codebase

These are unexploded minds as far as the linter is concerned. I don't
want to hit in my MRs by mistake!

I did this with `sed`, and then rolled back some changes in the docs,
config.guess, and the linter itself.

24 files changed, 57 insertions, 57 deletions

diff --git a/rts/Capability.c b/rts/Capability.c
index bda3b0e681..33a94398cd 100644
--- a/rts/Capability.c
+++ b/rts/Capability.c
@@ -842,7 +842,7 @@ void waitForCapability (Capability **pCap, Task *task)
  *
  * ------------------------------------------------------------------------- */
 
-#if defined (THREADED_RTS)
+#if defined(THREADED_RTS)
 
 /* See Note [GC livelock] in Schedule.c for why we have gcAllowed
    and return the bool */
@@ -948,7 +948,7 @@ yieldCapability (Capability** pCap, Task *task, bool gcAllowed)
  * get every Capability into the GC.
  * ------------------------------------------------------------------------- */
 
-#if defined (THREADED_RTS)
+#if defined(THREADED_RTS)
 
 void
 prodCapability (Capability *cap, Task *task)
@@ -970,7 +970,7 @@ prodCapability (Capability *cap, Task *task)
  *
  * ------------------------------------------------------------------------- */
 
-#if defined (THREADED_RTS)
+#if defined(THREADED_RTS)
 
 bool
 tryGrabCapability (Capability *cap, Task *task)
diff --git a/rts/Capability.h b/rts/Capability.h
index dc1c6c2073..2a5f127793 100644
--- a/rts/Capability.h
+++ b/rts/Capability.h
@@ -160,7 +160,7 @@ struct Capability_ {
 } // typedef Capability is defined in RtsAPI.h
   // We never want a Capability to overlap a cache line with anything
   // else, so round it up to a cache line size:
-#ifndef mingw32_HOST_OS
+#if !defined(mingw32_HOST_OS)
   ATTRIBUTE_ALIGNED(64)
 #endif
   ;
diff --git a/rts/Hash.c b/rts/Hash.c
index 658187b944..2f611c9079 100644
--- a/rts/Hash.c
+++ b/rts/Hash.c
@@ -80,7 +80,7 @@ int
 hashStr(const HashTable *table, StgWord w)
 {
     const char *key = (char*) w;
-#ifdef x86_64_HOST_ARCH
+#if defined(x86_64_HOST_ARCH)
     StgWord h = XXH64 (key, strlen(key), 1048583);
 #else
     StgWord h = XXH32 (key, strlen(key), 1048583);
diff --git a/rts/LinkerInternals.h b/rts/LinkerInternals.h
index 75871a5f98..9bdd7530d5 100644
--- a/rts/LinkerInternals.h
+++ b/rts/LinkerInternals.h
@@ -361,7 +361,7 @@ void freeSegments(ObjectCode *oc);
 || defined(openbsd_HOST_OS) || defined(gnu_HOST_OS)
 #  define OBJFORMAT_ELF
 #  include "linker/ElfTypes.h"
-#elif defined (mingw32_HOST_OS)
+#elif defined(mingw32_HOST_OS)
 #  define OBJFORMAT_PEi386
 #  include "linker/PEi386Types.h"
 #elif defined(darwin_HOST_OS) || defined(ios_HOST_OS)
diff --git a/rts/RtsMessages.c b/rts/RtsMessages.c
index a90962e89f..6f13580e06 100644
--- a/rts/RtsMessages.c
+++ b/rts/RtsMessages.c
@@ -114,7 +114,7 @@ vdebugBelch(const char*s, va_list ap)
 
 #define BUFSIZE 512
 
-#if defined (mingw32_HOST_OS)
+#if defined(mingw32_HOST_OS)
 static int
 isGUIApp(void)
 {
diff --git a/rts/RtsSymbols.c b/rts/RtsSymbols.c
index 7f62643d3c..e34fcf03f5 100644
--- a/rts/RtsSymbols.c
+++ b/rts/RtsSymbols.c
@@ -49,7 +49,7 @@
       SymE_HasProto(libdwPoolRelease)           \
       SymE_HasProto(libdwPoolClear)
 
-#if !defined (mingw32_HOST_OS)
+#if !defined(mingw32_HOST_OS)
 #define RTS_POSIX_ONLY_SYMBOLS                  \
       SymI_HasProto(__hscore_get_saved_termios) \
       SymI_HasProto(__hscore_set_saved_termios) \
diff --git a/rts/StgCRunAsm.S b/rts/StgCRunAsm.S
index 9274a445b5..1dd74d3652 100644
--- a/rts/StgCRunAsm.S
+++ b/rts/StgCRunAsm.S
@@ -2,7 +2,7 @@
 #include "rts/Constants.h"
 
 #if defined(powerpc64le_HOST_ARCH)
-# ifdef linux_HOST_OS
+# if defined(linux_HOST_OS)
 # define STACK_FRAME_SIZE RESERVED_C_STACK_BYTES+304
 	.file	"StgCRun.c"
 	.abiversion 2
diff --git a/rts/Ticky.c b/rts/Ticky.c
index 55df113d5d..a0611fe4c4 100644
--- a/rts/Ticky.c
+++ b/rts/Ticky.c
@@ -25,7 +25,7 @@ StgEntCounter *ticky_entry_ctrs = NULL; /* root of list of them */
 /* We want Haskell code compiled with -ticky to be linkable with any
  * version of the RTS, so we have to make sure all the symbols that
  * ticky-compiled code may refer to are defined by every RTS. (#3439)
- * Hence the #ifdef is here, rather than up above.
+ * Hence the #if defined(is) here, rather than up above.
  */
 #if defined(TICKY_TICKY)
 
diff --git a/rts/Trace.c b/rts/Trace.c
index e345377eef..d5c4319076 100644
--- a/rts/Trace.c
+++ b/rts/Trace.c
@@ -458,7 +458,7 @@ void traceOSProcessInfo_(void) {
                         CAPSET_OSPROCESS_DEFAULT,
                         getpid());
 
-#if !defined (mingw32_HOST_OS)
+#if !defined(mingw32_HOST_OS)
 /* Windows has no strong concept of process hierarchy, so no getppid().
  * In any case, this trace event is mainly useful for tracing programs
  * that use 'forkProcess' which Windows doesn't support anyway.
diff --git a/rts/linker/ELFRelocs/AArch64.def b/rts/linker/ELFRelocs/AArch64.def
index c21df07d2d..d77b681dc6 100644
--- a/rts/linker/ELFRelocs/AArch64.def
+++ b/rts/linker/ELFRelocs/AArch64.def
@@ -1,5 +1,5 @@
 
-#ifndef ELF_RELOC
+#if !defined(ELF_RELOC)
 #error "ELF_RELOC must be defined"
 #endif
 
diff --git a/rts/linker/ELFRelocs/ARM.def b/rts/linker/ELFRelocs/ARM.def
index 730fc5b883..eb21e6cef6 100644
--- a/rts/linker/ELFRelocs/ARM.def
+++ b/rts/linker/ELFRelocs/ARM.def
@@ -1,5 +1,5 @@
 
-#ifndef ELF_RELOC
+#if !defined(ELF_RELOC)
 #error "ELF_RELOC must be defined"
 #endif
 
diff --git a/rts/linker/ELFRelocs/i386.def b/rts/linker/ELFRelocs/i386.def
index 1d28cf595c..3191195ea8 100644
--- a/rts/linker/ELFRelocs/i386.def
+++ b/rts/linker/ELFRelocs/i386.def
@@ -1,5 +1,5 @@
 
-#ifndef ELF_RELOC
+#if !defined(ELF_RELOC)
 #error "ELF_RELOC must be defined"
 #endif
 
diff --git a/rts/linker/ELFRelocs/x86_64.def b/rts/linker/ELFRelocs/x86_64.def
index 18fdcf9472..197931fa51 100644
--- a/rts/linker/ELFRelocs/x86_64.def
+++ b/rts/linker/ELFRelocs/x86_64.def
@@ -1,5 +1,5 @@
 
-#ifndef ELF_RELOC
+#if !defined(ELF_RELOC)
 #error "ELF_RELOC must be defined"
 #endif
 
diff --git a/rts/linker/Elf.c b/rts/linker/Elf.c
index 954993f086..0882f8d349 100644
--- a/rts/linker/Elf.c
+++ b/rts/linker/Elf.c
@@ -1122,13 +1122,13 @@ do_Elf_Rel_relocations ( ObjectCode* oc, char* ehdrC,
 #endif
 
        switch (reloc_type) {
-#        ifdef i386_HOST_ARCH
+#        if defined(i386_HOST_ARCH)
        case COMPAT_R_386_NONE:                  break;
        case COMPAT_R_386_32:   *pP = value;     break;
        case COMPAT_R_386_PC32: *pP = value - P; break;
 #        endif
 
-#        ifdef arm_HOST_ARCH
+#        if defined(arm_HOST_ARCH)
        case COMPAT_R_ARM_ABS32:     /* (S + A) | T */
            // Specified by Linux ARM ABI to be equivalent to ABS32
        case COMPAT_R_ARM_TARGET1:
diff --git a/rts/linker/ElfTypes.h b/rts/linker/ElfTypes.h
index 852d82a498..e5333d71a7 100644
--- a/rts/linker/ElfTypes.h
+++ b/rts/linker/ElfTypes.h
@@ -1,4 +1,4 @@
-#ifndef ElfTypes_h
+#if !defined(ElfTypes_h)
 #define ElfTypes_h
 
 #if defined(OBJFORMAT_ELF)
diff --git a/rts/linker/elf_compat.h b/rts/linker/elf_compat.h
index c42f1f8949..b409728a09 100644
--- a/rts/linker/elf_compat.h
+++ b/rts/linker/elf_compat.h
@@ -9,7 +9,7 @@
 // under which it is distrubuted.
 //
 
-#ifndef RTS_ELF_COMPAT_H
+#if !defined(RTS_ELF_COMPAT_H)
 #define RTS_ELF_COMPAT_H
 
 #define PASTE(x,y) x ## y
diff --git a/rts/linker/elf_util.h b/rts/linker/elf_util.h
index d94eb6992e..2ece198268 100644
--- a/rts/linker/elf_util.h
+++ b/rts/linker/elf_util.h
@@ -1,4 +1,4 @@
-#ifndef RTS_LINKER_ELF_UTIL_H
+#if !defined(RTS_LINKER_ELF_UTIL_H)
 #define RTS_LINKER_ELF_UTIL_H
 
 #include "LinkerInternals.h"
diff --git a/rts/linker/util.h b/rts/linker/util.h
index f2aa50649d..77f06978ab 100644
--- a/rts/linker/util.h
+++ b/rts/linker/util.h
@@ -1,4 +1,4 @@
-#ifndef RTS_LINKER_UTIL_H
+#if !defined(RTS_LINKER_UTIL_H)
 #define RTS_LINKER_UTIL_H
 
 #include <stdint.h>
diff --git a/rts/package.conf.in b/rts/package.conf.in
index dc44b74ac1..a0e124a061 100644
--- a/rts/package.conf.in
+++ b/rts/package.conf.in
@@ -55,7 +55,7 @@ extra-libraries:
                               ,"bfd", "iberty"  /* for debugging */
 #endif
 #if defined(HAVE_LIBMINGWEX)
-# ifndef INSTALLING                             /* Bundled Mingw is behind */
+# if !defined(INSTALLING)                             /* Bundled Mingw is behind */
                               ,"mingwex"
 # endif
 #endif
diff --git a/rts/posix/OSMem.c b/rts/posix/OSMem.c
index cf4b705d74..dc8c4122f7 100644
--- a/rts/posix/OSMem.c
+++ b/rts/posix/OSMem.c
@@ -49,17 +49,17 @@
 #include <sys/sysctl.h>
 #endif
 
-#ifndef MAP_FAILED
+#if !defined(MAP_FAILED)
 # define MAP_FAILED ((void *)-1)
 #endif
 
 #if defined(hpux_HOST_OS)
-# ifndef MAP_ANON
+# if !defined(MAP_ANON)
 #  define MAP_ANON MAP_ANONYMOUS
 # endif
 #endif
 
-#ifndef darwin_HOST_OS
+#if !defined(darwin_HOST_OS)
 # undef RESERVE_FLAGS
 # if defined(MAP_GUARD)
 #  define RESERVE_FLAGS  MAP_GUARD /* FreeBSD */
diff --git a/rts/posix/Select.c b/rts/posix/Select.c
index 211d47dbec..5b143e1bf7 100644
--- a/rts/posix/Select.c
+++ b/rts/posix/Select.c
@@ -23,11 +23,11 @@
 #include "Stats.h"
 #include "GetTime.h"
 
-# ifdef HAVE_SYS_SELECT_H
+# if defined(HAVE_SYS_SELECT_H)
 #  include <sys/select.h>
 # endif
 
-# ifdef HAVE_SYS_TYPES_H
+# if defined(HAVE_SYS_TYPES_H)
 #  include <sys/types.h>
 # endif
 
diff --git a/rts/win32/ConsoleHandler.c b/rts/win32/ConsoleHandler.c
index 545a76a004..3ddf4103da 100644
--- a/rts/win32/ConsoleHandler.c
+++ b/rts/win32/ConsoleHandler.c
@@ -37,7 +37,7 @@ void
 initUserSignals(void)
 {
     console_handler = STG_SIG_DFL;
-#if !defined (THREADED_RTS)
+#if !defined(THREADED_RTS)
     stg_pending_events = 0;
     if (hConsoleEvent == INVALID_HANDLE_VALUE) {
         hConsoleEvent =
@@ -59,7 +59,7 @@ freeSignalHandlers(void) {
 void
 finiUserSignals(void)
 {
-#if !defined (THREADED_RTS)
+#if !defined(THREADED_RTS)
     if (hConsoleEvent != INVALID_HANDLE_VALUE) {
         CloseHandle(hConsoleEvent);
     }
@@ -162,7 +162,7 @@ void awaitUserSignals(void)
 }
 
 
-#if !defined (THREADED_RTS)
+#if !defined(THREADED_RTS)
 /*
  * Function: startSignalHandlers()
  *
diff --git a/rts/xxhash.c b/rts/xxhash.c
index 833b99f3b2..fd63ba89dd 100644
--- a/rts/xxhash.c
+++ b/rts/xxhash.c
@@ -49,7 +49,7 @@
  * See http://stackoverflow.com/a/32095106/646947 for details.
  * Prefer these methods in priority order (0 > 1 > 2)
  */
-#ifndef XXH_FORCE_MEMORY_ACCESS   /* can be defined externally, on command line for example */
+#if !defined(XXH_FORCE_MEMORY_ACCESS)   /* can be defined externally, on command line for example */
 #  if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) )
 #    define XXH_FORCE_MEMORY_ACCESS 2
 #  elif defined(__INTEL_COMPILER) || \
@@ -73,7 +73,7 @@
  * to improve speed for Big-endian CPU.
  * This option has no impact on Little_Endian CPU.
  */
-#ifndef XXH_FORCE_NATIVE_FORMAT   /* can be defined externally */
+#if !defined(XXH_FORCE_NATIVE_FORMAT)   /* can be defined externally */
 #  define XXH_FORCE_NATIVE_FORMAT 0
 #endif
 
@@ -84,7 +84,7 @@
  * set it to 0 when the input is guaranteed to be aligned,
  * or when alignment doesn't matter for performance.
  */
-#ifndef XXH_FORCE_ALIGN_CHECK /* can be defined externally */
+#if !defined(XXH_FORCE_ALIGN_CHECK) /* can be defined externally */
 #  if defined(__i386) || defined(_M_IX86) || defined(__x86_64__) || defined(_M_X64)
 #    define XXH_FORCE_ALIGN_CHECK 0
 #  else
@@ -112,12 +112,12 @@ static void* XXH_memcpy(void* dest, const void* src, size_t size) { return memcp
 /* *************************************
 *  Compiler Specific Options
 ***************************************/
-#ifdef _MSC_VER    /* Visual Studio */
+#if defined(_MSC_VER)    /* Visual Studio */
 #  pragma warning(disable : 4127)      /* disable: C4127: conditional expression is constant */
 #  define FORCE_INLINE static __forceinline
 #else
-#  if defined (__cplusplus) || defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L   /* C99 */
-#    ifdef __GNUC__
+#  if defined(__cplusplus) || defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L   /* C99 */
+#    if defined(__GNUC__)
 #      define FORCE_INLINE static inline __attribute__((always_inline))
 #    else
 #      define FORCE_INLINE static inline
@@ -131,8 +131,8 @@ static void* XXH_memcpy(void* dest, const void* src, size_t size) { return memcp
 /* *************************************
 *  Basic Types
 ***************************************/
-#ifndef MEM_MODULE
-# if !defined (__VMS) && (defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
+#if !defined(MEM_MODULE)
+# if !defined(__VMS) && (defined(__cplusplus) || (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
 #   include <stdint.h>
     typedef uint8_t  BYTE;
     typedef uint16_t U16;
@@ -206,7 +206,7 @@ static U32 XXH_swap32 (U32 x)
 typedef enum { XXH_bigEndian=0, XXH_littleEndian=1 } XXH_endianess;
 
 /* XXH_CPU_LITTLE_ENDIAN can be defined externally, for example on the compiler command line */
-#ifndef XXH_CPU_LITTLE_ENDIAN
+#if !defined(XXH_CPU_LITTLE_ENDIAN)
     static const int g_one = 1;
 #   define XXH_CPU_LITTLE_ENDIAN   (*(const char*)(&g_one))
 #endif
@@ -267,7 +267,7 @@ FORCE_INLINE U32 XXH32_endian_align(const void* input, size_t len, U32 seed, XXH
     U32 h32;
 #define XXH_get32bits(p) XXH_readLE32_align(p, endian, align)
 
-#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
+#if defined(XXH_ACCEPT_NULL_INPUT_POINTER)
     if (p==NULL) {
         len=0;
         bEnd=p=(const BYTE*)(size_t)16;
@@ -380,7 +380,7 @@ FORCE_INLINE XXH_errorcode XXH32_update_endian (XXH32_state_t* state, const void
     const BYTE* p = (const BYTE*)input;
     const BYTE* const bEnd = p + len;
 
-#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
+#if defined(XXH_ACCEPT_NULL_INPUT_POINTER)
     if (input==NULL) return XXH_ERROR;
 #endif
 
@@ -513,7 +513,7 @@ XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src
 }
 
 
-#ifndef XXH_NO_LONG_LONG
+#if !defined(XXH_NO_LONG_LONG)
 
 /* *******************************************************************
 *  64-bits hash functions
@@ -521,9 +521,9 @@ XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src
 
 /*======   Memory access   ======*/
 
-#ifndef MEM_MODULE
+#if !defined(MEM_MODULE)
 # define MEM_MODULE
-# if !defined (__VMS) && (defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
+# if !defined(__VMS) && (defined(__cplusplus) || (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) )
 #   include <stdint.h>
     typedef uint64_t U64;
 # else
@@ -627,7 +627,7 @@ FORCE_INLINE U64 XXH64_endian_align(const void* input, size_t len, U64 seed, XXH
     U64 h64;
 #define XXH_get64bits(p) XXH_readLE64_align(p, endian, align)
 
-#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
+#if defined(XXH_ACCEPT_NULL_INPUT_POINTER)
     if (p==NULL) {
         len=0;
         bEnd=p=(const BYTE*)(size_t)32;
@@ -749,7 +749,7 @@ FORCE_INLINE XXH_errorcode XXH64_update_endian (XXH64_state_t* state, const void
     const BYTE* p = (const BYTE*)input;
     const BYTE* const bEnd = p + len;
 
-#ifdef XXH_ACCEPT_NULL_INPUT_POINTER
+#if defined(XXH_ACCEPT_NULL_INPUT_POINTER)
     if (input==NULL) return XXH_ERROR;
 #endif
 
diff --git a/rts/xxhash.h b/rts/xxhash.h
index 9d831e03b3..98ec9639cb 100644
--- a/rts/xxhash.h
+++ b/rts/xxhash.h
@@ -64,10 +64,10 @@ XXH64       13.8 GB/s            1.9 GB/s
 XXH32        6.8 GB/s            6.0 GB/s
 */
 
-#ifndef XXHASH_H_5627135585666179
+#if !defined(XXHASH_H_5627135585666179)
 #define XXHASH_H_5627135585666179 1
 
-#if defined (__cplusplus)
+#if defined(__cplusplus)
 extern "C" {
 #endif
 
@@ -91,13 +91,13 @@ typedef enum { XXH_OK=0, XXH_ERROR } XXH_errorcode;
 *   `xxhash.c` is automatically included.
 *   It's not useful to compile and link it as a separate module.
 */
-#ifdef XXH_PRIVATE_API
-#  ifndef XXH_STATIC_LINKING_ONLY
+#if defined(XXH_PRIVATE_API)
+#  if !defined(XXH_STATIC_LINKING_ONLY)
 #    define XXH_STATIC_LINKING_ONLY
 #  endif
 #  if defined(__GNUC__)
 #    define XXH_PUBLIC_API static __inline __attribute__((unused))
-#  elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
+#  elif defined(__cplusplus) || (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */)
 #    define XXH_PUBLIC_API static inline
 #  elif defined(_MSC_VER)
 #    define XXH_PUBLIC_API static __inline
@@ -119,7 +119,7 @@ with the value of XXH_NAMESPACE (therefore, avoid NULL and numeric values).
 Note that no change is required within the calling program as long as it includes `xxhash.h` :
 regular symbol name will be automatically translated by this header.
 */
-#ifdef XXH_NAMESPACE
+#if defined(XXH_NAMESPACE)
 #  define XXH_CAT(A,B) A##B
 #  define XXH_NAME2(A,B) XXH_CAT(A,B)
 #  define XXH_versionNumber XXH_NAME2(XXH_NAMESPACE, XXH_versionNumber)
@@ -211,7 +211,7 @@ XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src
 */
 
 
-#ifndef XXH_NO_LONG_LONG
+#if !defined(XXH_NO_LONG_LONG)
 /*-**********************************************************************
 *  64-bits hash
 ************************************************************************/
@@ -241,7 +241,7 @@ XXH_PUBLIC_API XXH64_hash_t XXH64_hashFromCanonical(const XXH64_canonical_t* src
 #endif  /* XXH_NO_LONG_LONG */
 
 
-#ifdef XXH_STATIC_LINKING_ONLY
+#if defined(XXH_STATIC_LINKING_ONLY)
 
 /* ================================================================================================
    This section contains definitions which are not guaranteed to remain stable.
@@ -266,7 +266,7 @@ struct XXH32_state_s {
    unsigned reserved;   /* never read nor write, will be removed in a future version */
 };   /* typedef'd to XXH32_state_t */
 
-#ifndef XXH_NO_LONG_LONG   /* remove 64-bits support */
+#if !defined(XXH_NO_LONG_LONG)   /* remove 64-bits support */
 struct XXH64_state_s {
    unsigned long long total_len;
    unsigned long long v1;
@@ -279,14 +279,14 @@ struct XXH64_state_s {
 };   /* typedef'd to XXH64_state_t */
 #endif
 
-#ifdef XXH_PRIVATE_API
+#if defined(XXH_PRIVATE_API)
 #  include "xxhash.c"   /* include xxhash function bodies as `static`, for inlining */
 #endif
 
 #endif /* XXH_STATIC_LINKING_ONLY */
 
 
-#if defined (__cplusplus)
+#if defined(__cplusplus)
 }
 #endif