9 files changed, 9 insertions, 7 deletions
diff --git a/src/math/acosh.c b/src/math/acosh.c
index 291087b2..aeb15816 100644
--- a/src/math/acosh.c
+++ b/src/math/acosh.c
@@ -4,7 +4,7 @@
 
 TYPE TGFN(acosh)(TYPE x)
 {
-	return 0.0;
+	return x;
 }
 
 /*
diff --git a/src/math/asinh.c b/src/math/asinh.c
index 08700a25..421f574d 100644
--- a/src/math/asinh.c
+++ b/src/math/asinh.c
@@ -4,7 +4,7 @@
 
 TYPE TGFN(asinh)(TYPE x)
 {
-	return 0.0;
+	return x;
 }
 
 /*
diff --git a/src/math/atanh.c b/src/math/atanh.c
index e99a26b7..eef1cfc6 100644
--- a/src/math/atanh.c
+++ b/src/math/atanh.c
@@ -4,7 +4,7 @@
 
 TYPE TGFN(atanh)(TYPE x)
 {
-	return 0.0;
+	return x;
 }
 
 /*
diff --git a/src/math/copysign.c b/src/math/copysign.c
index 6e5cb127..a462348b 100644
--- a/src/math/copysign.c
+++ b/src/math/copysign.c
@@ -4,7 +4,7 @@
 
 TYPE TGFN(copysign)(TYPE x, TYPE y)
 {
-	return 0.0;
+	return x - y;
 }
 
 /*
diff --git a/src/math/nan.c b/src/math/nan.c
index c5615b98..bd0cbbc4 100644
--- a/src/math/nan.c
+++ b/src/math/nan.c
@@ -4,6 +4,7 @@
 
 TYPE TGFN(nan)(const char *tagp)
 {
+	(void)tagp;
 	return 0.0;
 }
 
diff --git a/src/math/nearbyint.c b/src/math/nearbyint.c
index c3994a62..d5d2cc21 100644
--- a/src/math/nearbyint.c
+++ b/src/math/nearbyint.c
@@ -4,7 +4,7 @@
 
 TYPE TGFN(nearbyint)(TYPE x)
 {
-	return 0.0;
+	return x;
 }
 
 /*
diff --git a/src/math/remquo.c b/src/math/remquo.c
index 88e59c0f..7a117ba7 100644
--- a/src/math/remquo.c
+++ b/src/math/remquo.c
@@ -4,6 +4,7 @@
 
 TYPE TGFN(remquo)(TYPE x, TYPE y, int *quo)
 {
+	(void)quo;
 	return x - y;
 }
 
diff --git a/src/math/tgamma.c b/src/math/tgamma.c
index 25778059..b80584ac 100644
--- a/src/math/tgamma.c
+++ b/src/math/tgamma.c
@@ -4,7 +4,7 @@
 
 TYPE TGFN(tgamma)(TYPE x)
 {
-	return 0.0;
+	return x;
 }
 
 /*
diff --git a/src/math/trunc.c b/src/math/trunc.c
index 77671f5d..4b1081a6 100644
--- a/src/math/trunc.c
+++ b/src/math/trunc.c
@@ -4,7 +4,7 @@
 
 TYPE TGFN(trunc)(TYPE x)
 {
-	return 0.0;
+	return x;
 }
 
 /*