diff --git a/include/math.h b/include/math.h
index e98715166be65c19941ae1fa6dc26c6c870df57f..f320b8e9409536d09699b33603099e90d7a5af52 100644
--- a/include/math.h
+++ b/include/math.h
@@ -382,9 +382,6 @@ long double ynl(int, long double);
 double      scalb(double, double);
 float       scalbf(float, float);
 long double scalbl(long double, long double);
-void sincosf(float, float *, float *);
-void sincos(double, double *, double *);
-void sincosl(long double, long double *, long double *);
 #endif
 
 #ifdef __cplusplus
diff --git a/src/linux/sincos.c b/src/linux/sincos.c
deleted file mode 100644
index b69ffce90126d3ff918abe64e0a5d7afe16cf4cd..0000000000000000000000000000000000000000
--- a/src/linux/sincos.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#define _GNU_SOURCE
-#include <math.h>
-
-void sincos(double t, double *y, double *x)
-{
-	*y = sin(t);
-	*x = cos(t);
-}
diff --git a/src/linux/sincosf.c b/src/linux/sincosf.c
deleted file mode 100644
index 5d8d4458d2d0f5acbffb11df064383b47cb31626..0000000000000000000000000000000000000000
--- a/src/linux/sincosf.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#define _GNU_SOURCE
-#include <math.h>
-
-void sincosf(float t, float *y, float *x)
-{
-	*y = sinf(t);
-	*x = cosf(t);
-}
diff --git a/src/linux/sincosl.c b/src/linux/sincosl.c
deleted file mode 100644
index 2bfc486267d3b55c064f3b8e10d0edcfab370e69..0000000000000000000000000000000000000000
--- a/src/linux/sincosl.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#define _GNU_SOURCE
-#include <math.h>
-
-void sincosl(long double t, long double *y, long double *x)
-{
-	*y = sinl(t);
-	*x = cosl(t);
-}