libm compilation fixes from Darcy Gong

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5275 42af7a65-404d-4744-a932-0658087f49c3

48 files changed, 48 insertions, 48 deletions

diff --git a/nuttx/lib/math/Make.defs b/nuttx/lib/math/Make.defs
index 8e2e60f12..73d0be6f3 100644
--- a/nuttx/lib/math/Make.defs
+++ b/nuttx/lib/math/Make.defs
@@ -44,7 +44,7 @@ CSRCS += lib_sinf.c lib_sinhf.c lib_sqrtf.c lib_tanf.c lib_tanhf.c
 
 CSRCS += lib_acos.c lib_asin.c lib_atan.c lib_atan2.c lib_ceil.c lib_cos.c
 CSRCS += lib_cosh.c lib_exp.c lib_fabs.c lib_floor.c lib_fmod.c lib_frexp.c
-CRRCS += lib_ldexp.c lib_log.c lib_log10.c lib_log2.c lib_modf.c lib_pow.c
+CSRCS += lib_ldexp.c lib_log.c lib_log10.c lib_log2.c lib_modf.c lib_pow.c
 CSRCS += lib_sin.c lib_sinh.c lib_sqrt.c lib_tan.c lib_tanh.c
 
 CSRCS += lib_acosl.c lib_asinl.c lib_atan2l.c lib_atanl.c lib_ceill.c lib_cosl.c
diff --git a/nuttx/lib/math/lib_acos.c b/nuttx/lib/math/lib_acos.c
index 4c5aa67c0..d5ec36b9f 100644
--- a/nuttx/lib/math/lib_acos.c
+++ b/nuttx/lib/math/lib_acos.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double acos(double x)
 {
   return (M_PI_2 - asin(x));
diff --git a/nuttx/lib/math/lib_acosl.c b/nuttx/lib/math/lib_acosl.c
index 3b6fa8aa9..911330577 100644
--- a/nuttx/lib/math/lib_acosl.c
+++ b/nuttx/lib/math/lib_acosl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double acosl(long double x)
 {
   return (M_PI_2 - asinl(x));
diff --git a/nuttx/lib/math/lib_asin.c b/nuttx/lib/math/lib_asin.c
index 1469d1ed8..61b953531 100644
--- a/nuttx/lib/math/lib_asin.c
+++ b/nuttx/lib/math/lib_asin.c
@@ -39,7 +39,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double asin(double x)
 {
   long double y, y_sin, y_cos;
diff --git a/nuttx/lib/math/lib_asinl.c b/nuttx/lib/math/lib_asinl.c
index bd1cb70ee..dbb2bc3a2 100644
--- a/nuttx/lib/math/lib_asinl.c
+++ b/nuttx/lib/math/lib_asinl.c
@@ -39,7 +39,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double asinl(long double x)
 {
   long double y, y_sin, y_cos;
diff --git a/nuttx/lib/math/lib_atan.c b/nuttx/lib/math/lib_atan.c
index 2b7f6e3a6..b4db8fb31 100644
--- a/nuttx/lib/math/lib_atan.c
+++ b/nuttx/lib/math/lib_atan.c
@@ -40,7 +40,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double atan(double x)
 {
   return asin(x / sqrt(x * x + 1));
diff --git a/nuttx/lib/math/lib_atan2.c b/nuttx/lib/math/lib_atan2.c
index bfb33657c..82d1f47ec 100644
--- a/nuttx/lib/math/lib_atan2.c
+++ b/nuttx/lib/math/lib_atan2.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double atan2(double y, double x)
 {
   if (y == 0.0)
diff --git a/nuttx/lib/math/lib_atan2l.c b/nuttx/lib/math/lib_atan2l.c
index d7891b628..07fcd9669 100644
--- a/nuttx/lib/math/lib_atan2l.c
+++ b/nuttx/lib/math/lib_atan2l.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double atan2l(long double y, long double x)
 {
 
diff --git a/nuttx/lib/math/lib_atanl.c b/nuttx/lib/math/lib_atanl.c
index c8fa239f9..0fa203098 100644
--- a/nuttx/lib/math/lib_atanl.c
+++ b/nuttx/lib/math/lib_atanl.c
@@ -40,7 +40,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double atanl(long double x)
 {
   return asinl(x / sqrtl(x * x + 1));
diff --git a/nuttx/lib/math/lib_ceil.c b/nuttx/lib/math/lib_ceil.c
index 12e223128..0e7602996 100644
--- a/nuttx/lib/math/lib_ceil.c
+++ b/nuttx/lib/math/lib_ceil.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double ceil(double x)
 {
   modf(x, &x);
diff --git a/nuttx/lib/math/lib_ceill.c b/nuttx/lib/math/lib_ceill.c
index 5a0010aa2..a24b56f68 100644
--- a/nuttx/lib/math/lib_ceill.c
+++ b/nuttx/lib/math/lib_ceill.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double ceill(long double x)
 {
   modfl(x, &x);
diff --git a/nuttx/lib/math/lib_cos.c b/nuttx/lib/math/lib_cos.c
index 09808bd9f..aa672b855 100644
--- a/nuttx/lib/math/lib_cos.c
+++ b/nuttx/lib/math/lib_cos.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double cos(double x)
 {
   return sin(x + M_PI_2);
diff --git a/nuttx/lib/math/lib_cosh.c b/nuttx/lib/math/lib_cosh.c
index de4f42d7a..1be44d293 100644
--- a/nuttx/lib/math/lib_cosh.c
+++ b/nuttx/lib/math/lib_cosh.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double cosh(double x)
 {
   x = exp(x);
diff --git a/nuttx/lib/math/lib_coshl.c b/nuttx/lib/math/lib_coshl.c
index d43912745..4576b8876 100644
--- a/nuttx/lib/math/lib_coshl.c
+++ b/nuttx/lib/math/lib_coshl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double coshl(long double x)
 {
   x = expl(x);
diff --git a/nuttx/lib/math/lib_cosl.c b/nuttx/lib/math/lib_cosl.c
index 5b7321812..25dd86139 100644
--- a/nuttx/lib/math/lib_cosl.c
+++ b/nuttx/lib/math/lib_cosl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double cosl(long double x)
 {
   return sinl(x + M_PI_2);
diff --git a/nuttx/lib/math/lib_exp.c b/nuttx/lib/math/lib_exp.c
index 350229860..1e3120453 100644
--- a/nuttx/lib/math/lib_exp.c
+++ b/nuttx/lib/math/lib_exp.c
@@ -37,7 +37,7 @@
 
 #include "lib_internal.h"
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 
 /************************************************************************
  * Private Data
diff --git a/nuttx/lib/math/lib_expl.c b/nuttx/lib/math/lib_expl.c
index cd5e6a500..053103c9b 100644
--- a/nuttx/lib/math/lib_expl.c
+++ b/nuttx/lib/math/lib_expl.c
@@ -37,7 +37,7 @@
 
 #include "lib_internal.h"
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 
 /************************************************************************
  * Private Data
diff --git a/nuttx/lib/math/lib_fabs.c b/nuttx/lib/math/lib_fabs.c
index a635b0b41..ff99ceb64 100644
--- a/nuttx/lib/math/lib_fabs.c
+++ b/nuttx/lib/math/lib_fabs.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double fabs(double x)
 {
   return ((x < 0) ? -x : x);
diff --git a/nuttx/lib/math/lib_fabsl.c b/nuttx/lib/math/lib_fabsl.c
index f1e37e3f1..5313d897d 100644
--- a/nuttx/lib/math/lib_fabsl.c
+++ b/nuttx/lib/math/lib_fabsl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double fabsl(long double x)
 {
   return ((x < 0) ? -x : x);
diff --git a/nuttx/lib/math/lib_floor.c b/nuttx/lib/math/lib_floor.c
index 895b9a503..f0c4477a0 100644
--- a/nuttx/lib/math/lib_floor.c
+++ b/nuttx/lib/math/lib_floor.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double floor(double x)
 {
   modf(x, &x);
diff --git a/nuttx/lib/math/lib_floorl.c b/nuttx/lib/math/lib_floorl.c
index 2c7011297..e38ce80ed 100644
--- a/nuttx/lib/math/lib_floorl.c
+++ b/nuttx/lib/math/lib_floorl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double floorl(long double x)
 {
   modfl(x, &x);
diff --git a/nuttx/lib/math/lib_fmod.c b/nuttx/lib/math/lib_fmod.c
index c55151d75..939e7e18a 100644
--- a/nuttx/lib/math/lib_fmod.c
+++ b/nuttx/lib/math/lib_fmod.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double fmod(double x, double div)
 {
   double n0;
diff --git a/nuttx/lib/math/lib_fmodl.c b/nuttx/lib/math/lib_fmodl.c
index c9b3ca784..51c5e95ec 100644
--- a/nuttx/lib/math/lib_fmodl.c
+++ b/nuttx/lib/math/lib_fmodl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double fmodl(long double x, long double div)
 {
   long double n0;
diff --git a/nuttx/lib/math/lib_frexp.c b/nuttx/lib/math/lib_frexp.c
index 6de67f8b5..56feee863 100644
--- a/nuttx/lib/math/lib_frexp.c
+++ b/nuttx/lib/math/lib_frexp.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double frexp(double x, int *exponent)
 {
   *exponent = (int)ceil(log2(x));
diff --git a/nuttx/lib/math/lib_frexpl.c b/nuttx/lib/math/lib_frexpl.c
index 7a0d3c408..87708ad86 100644
--- a/nuttx/lib/math/lib_frexpl.c
+++ b/nuttx/lib/math/lib_frexpl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double frexpl(long double x, int *exponent)
 {
   *exponent = (int)ceill(log2(x));
diff --git a/nuttx/lib/math/lib_ldexp.c b/nuttx/lib/math/lib_ldexp.c
index ca428dc07..4c7b2b721 100644
--- a/nuttx/lib/math/lib_ldexp.c
+++ b/nuttx/lib/math/lib_ldexp.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double ldexp(double x, int n)
 {
   return (x * pow(2.0, (double)n));
diff --git a/nuttx/lib/math/lib_ldexpl.c b/nuttx/lib/math/lib_ldexpl.c
index 0f77bff11..b9a0f4a86 100644
--- a/nuttx/lib/math/lib_ldexpl.c
+++ b/nuttx/lib/math/lib_ldexpl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double ldexpl(long double x, int n)
 {
   return (x * powl(2.0, (long double)n));
diff --git a/nuttx/lib/math/lib_libexpi.c b/nuttx/lib/math/lib_libexpi.c
index d2bb971a2..1ec947a71 100644
--- a/nuttx/lib/math/lib_libexpi.c
+++ b/nuttx/lib/math/lib_libexpi.c
@@ -77,7 +77,7 @@ static double _expi_square_tbl[11] =
  * Public Functions
  ************************************************************************/
 
-static double lib_expi(size_t n)
+double lib_expi(size_t n)
 {
   size_t i;
   double val;
diff --git a/nuttx/lib/math/lib_log.c b/nuttx/lib/math/lib_log.c
index 4dd51e87c..1350ba4fe 100644
--- a/nuttx/lib/math/lib_log.c
+++ b/nuttx/lib/math/lib_log.c
@@ -39,7 +39,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double log(double x)
 {
   double y, y_old, ey, epsilon;
diff --git a/nuttx/lib/math/lib_log10.c b/nuttx/lib/math/lib_log10.c
index a6534407e..47854fca4 100644
--- a/nuttx/lib/math/lib_log10.c
+++ b/nuttx/lib/math/lib_log10.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double log10(double x)
 {
   return (log(x) / M_LN10);
diff --git a/nuttx/lib/math/lib_log10l.c b/nuttx/lib/math/lib_log10l.c
index 8702ed5a5..65892262a 100644
--- a/nuttx/lib/math/lib_log10l.c
+++ b/nuttx/lib/math/lib_log10l.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double log10l(long double x)
 {
   return (logl(x) / M_LN10);
diff --git a/nuttx/lib/math/lib_log2.c b/nuttx/lib/math/lib_log2.c
index 377d78e29..0aa1e8010 100644
--- a/nuttx/lib/math/lib_log2.c
+++ b/nuttx/lib/math/lib_log2.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double log2(double x)
 {
   return (log(x) / M_LN2);
diff --git a/nuttx/lib/math/lib_log2l.c b/nuttx/lib/math/lib_log2l.c
index cd25c32f1..21d26d4d7 100644
--- a/nuttx/lib/math/lib_log2l.c
+++ b/nuttx/lib/math/lib_log2l.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double log2l(long double x)
 {
   return (logl(x) / M_LN2);
diff --git a/nuttx/lib/math/lib_logl.c b/nuttx/lib/math/lib_logl.c
index df0031943..577f9cee2 100644
--- a/nuttx/lib/math/lib_logl.c
+++ b/nuttx/lib/math/lib_logl.c
@@ -39,7 +39,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double logl(long double x)
 {
   long double y, y_old, ey, epsilon;
diff --git a/nuttx/lib/math/lib_modf.c b/nuttx/lib/math/lib_modf.c
index 3b33cde42..9dc6284c2 100644
--- a/nuttx/lib/math/lib_modf.c
+++ b/nuttx/lib/math/lib_modf.c
@@ -36,7 +36,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double modf(double x, double *iptr)
 {
   if (fabs(x) >= 4503599627370496.0)
diff --git a/nuttx/lib/math/lib_modfl.c b/nuttx/lib/math/lib_modfl.c
index 55b17eae6..3b04571f3 100644
--- a/nuttx/lib/math/lib_modfl.c
+++ b/nuttx/lib/math/lib_modfl.c
@@ -39,7 +39,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double modfl(long double x, long double *iptr)
 {
   if (fabs(x) >= 4503599627370496.0)
diff --git a/nuttx/lib/math/lib_pow.c b/nuttx/lib/math/lib_pow.c
index 66f6a2d2e..af0a55d32 100644
--- a/nuttx/lib/math/lib_pow.c
+++ b/nuttx/lib/math/lib_pow.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double pow(double b, double e)
 {
   return exp(e * log(b));
diff --git a/nuttx/lib/math/lib_powl.c b/nuttx/lib/math/lib_powl.c
index 6a820df26..f5fbf042e 100644
--- a/nuttx/lib/math/lib_powl.c
+++ b/nuttx/lib/math/lib_powl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double powl(long double b, long double e)
 {
   return expl(e * logl(b));
diff --git a/nuttx/lib/math/lib_sin.c b/nuttx/lib/math/lib_sin.c
index 2d21d2309..c04d6b88b 100644
--- a/nuttx/lib/math/lib_sin.c
+++ b/nuttx/lib/math/lib_sin.c
@@ -35,7 +35,7 @@
 #include <sys/types.h>
 #include <math.h>
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 
 /************************************************************************
  * Private Data
diff --git a/nuttx/lib/math/lib_sinh.c b/nuttx/lib/math/lib_sinh.c
index a22652302..f33852433 100644
--- a/nuttx/lib/math/lib_sinh.c
+++ b/nuttx/lib/math/lib_sinh.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double sinh(double x)
 {
   x = exp(x);
diff --git a/nuttx/lib/math/lib_sinhl.c b/nuttx/lib/math/lib_sinhl.c
index 442586ffb..b0fea2914 100644
--- a/nuttx/lib/math/lib_sinhl.c
+++ b/nuttx/lib/math/lib_sinhl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double sinhl(long double x)
 {
   x = expl(x);
diff --git a/nuttx/lib/math/lib_sinl.c b/nuttx/lib/math/lib_sinl.c
index f8d9e00ed..a69b548cb 100644
--- a/nuttx/lib/math/lib_sinl.c
+++ b/nuttx/lib/math/lib_sinl.c
@@ -35,7 +35,7 @@
 #include <sys/types.h>
 #include <math.h>
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 
 /************************************************************************
  * Private Data
diff --git a/nuttx/lib/math/lib_sqrt.c b/nuttx/lib/math/lib_sqrt.c
index 96f0d5409..d77997f7c 100644
--- a/nuttx/lib/math/lib_sqrt.c
+++ b/nuttx/lib/math/lib_sqrt.c
@@ -41,7 +41,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double sqrt(double x)
 {
   long double y, y1;
diff --git a/nuttx/lib/math/lib_sqrtl.c b/nuttx/lib/math/lib_sqrtl.c
index f305092e7..6674fe50f 100644
--- a/nuttx/lib/math/lib_sqrtl.c
+++ b/nuttx/lib/math/lib_sqrtl.c
@@ -41,7 +41,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double sqrtl(long double x)
 {
   long double y, y1;
diff --git a/nuttx/lib/math/lib_tan.c b/nuttx/lib/math/lib_tan.c
index a9a1d8ebe..bce14b327 100644
--- a/nuttx/lib/math/lib_tan.c
+++ b/nuttx/lib/math/lib_tan.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double tan(double x)
 {
   return (sin(x) / cos(x));
diff --git a/nuttx/lib/math/lib_tanh.c b/nuttx/lib/math/lib_tanh.c
index 5cc1d9176..46fddd06d 100644
--- a/nuttx/lib/math/lib_tanh.c
+++ b/nuttx/lib/math/lib_tanh.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_DOUBLE
+#ifdef CONFIG_HAVE_DOUBLE
 double tanh(double x)
 {
   double x0 = exp(x);
diff --git a/nuttx/lib/math/lib_tanhl.c b/nuttx/lib/math/lib_tanhl.c
index 8b897451e..23c11d667 100644
--- a/nuttx/lib/math/lib_tanhl.c
+++ b/nuttx/lib/math/lib_tanhl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double tanhl(long double x)
 {
   long double x0 = exp(x);
diff --git a/nuttx/lib/math/lib_tanl.c b/nuttx/lib/math/lib_tanl.c
index c4c3712c1..4973aa073 100644
--- a/nuttx/lib/math/lib_tanl.c
+++ b/nuttx/lib/math/lib_tanl.c
@@ -38,7 +38,7 @@
  * Public Functions
  ************************************************************************/
 
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
 long double tanl(long double x)
 {
   return (sinl(x) / cosl(x));