diff --git a/lib/libc/mingw/math/x86/tanl.S b/lib/libc/mingw/math/x86/tanl.S
deleted file mode 100644
index f11b53920b..0000000000
--- a/lib/libc/mingw/math/x86/tanl.S
+++ /dev/null
@@ -1,62 +0,0 @@
-/**
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is part of the mingw-w64 runtime package.
- * No warranty is given; refer to the file DISCLAIMER.PD within this package.
- */
-#include <_mingw_mac.h>
-
-	.file	"tanl.S"
-	.text
-#ifdef __x86_64__
-	.align 8
-#else
-	.align 4
-#endif
-.globl __MINGW_USYMBOL(tanl)
-	.def	__MINGW_USYMBOL(tanl);	.scl	2;	.type	32;	.endef
-__MINGW_USYMBOL(tanl):
-#ifdef __x86_64__
-	fldt	(%rdx)
-	fptan
-	fnstsw	%ax
-	testl	$0x400,%eax
-	jnz	1f
-	fstp	%st(0)
-	movq	%rcx,%rax
-	movq	$0,8(%rcx)
-	fstpt	(%rcx)
-	ret
-1:	fldpi
-	fadd	%st(0)
-	fxch	%st(1)
-2:	fprem1
-	fstsw	%ax
-	testl	$0x400,%eax
-	jnz	2b
-	fstp	%st(1)
-	fptan
-	fstp	%st(0)
-	movq	%rcx,%rax
-	movq	$0,8(%rcx)
-	fstpt	(%rcx)
-	ret
-#else
-	fldt	4(%esp)
-	fptan
-	fnstsw	%ax
-	testl	$0x400,%eax
-	jnz	1f
-	fstp	%st(0)
-	ret
-1:	fldpi
-	fadd	%st(0)
-	fxch	%st(1)
-2:	fprem1
-	fstsw	%ax
-	testl	$0x400,%eax
-	jnz	2b
-	fstp	%st(1)
-	fptan
-	fstp	%st(0)
-	ret
-#endif
diff --git a/lib/libc/musl/src/math/__tanl.c b/lib/libc/musl/src/math/__tanl.c
deleted file mode 100644
index 54abc3daf1..0000000000
--- a/lib/libc/musl/src/math/__tanl.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/* origin: FreeBSD /usr/src/lib/msun/ld80/k_tanl.c */
-/* origin: FreeBSD /usr/src/lib/msun/ld128/k_tanl.c */
-/*
- * ====================================================
- * Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved.
- * Copyright (c) 2008 Steven G. Kargl, David Schultz, Bruce D. Evans.
- *
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-
-#include "libm.h"
-
-#if (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
-#if LDBL_MANT_DIG == 64
-/*
- * ld80 version of __tan.c.  See __tan.c for most comments.
- */
-/*
- * Domain [-0.67434, 0.67434], range ~[-2.25e-22, 1.921e-22]
- * |tan(x)/x - t(x)| < 2**-71.9
- *
- * See __cosl.c for more details about the polynomial.
- */
-static const long double
-T3 =  0.333333333333333333180L,         /*  0xaaaaaaaaaaaaaaa5.0p-65 */
-T5 =  0.133333333333333372290L,         /*  0x88888888888893c3.0p-66 */
-T7 =  0.0539682539682504975744L,        /*  0xdd0dd0dd0dc13ba2.0p-68 */
-pio4   =  0.785398163397448309628L,     /*  0xc90fdaa22168c235.0p-64 */
-pio4lo = -1.25413940316708300586e-20L;  /* -0xece675d1fc8f8cbb.0p-130 */
-static const double
-T9  =  0.021869488536312216,            /*  0x1664f4882cc1c2.0p-58 */
-T11 =  0.0088632355256619590,           /*  0x1226e355c17612.0p-59 */
-T13 =  0.0035921281113786528,           /*  0x1d6d3d185d7ff8.0p-61 */
-T15 =  0.0014558334756312418,           /*  0x17da354aa3f96b.0p-62 */
-T17 =  0.00059003538700862256,          /*  0x13559358685b83.0p-63 */
-T19 =  0.00023907843576635544,          /*  0x1f56242026b5be.0p-65 */
-T21 =  0.000097154625656538905,         /*  0x1977efc26806f4.0p-66 */
-T23 =  0.000038440165747303162,         /*  0x14275a09b3ceac.0p-67 */
-T25 =  0.000018082171885432524,         /*  0x12f5e563e5487e.0p-68 */
-T27 =  0.0000024196006108814377,        /*  0x144c0d80cc6896.0p-71 */
-T29 =  0.0000078293456938132840,        /*  0x106b59141a6cb3.0p-69 */
-T31 = -0.0000032609076735050182,        /* -0x1b5abef3ba4b59.0p-71 */
-T33 =  0.0000023261313142559411;        /*  0x13835436c0c87f.0p-71 */
-#define RPOLY(w) (T5 + w * (T9 + w * (T13 + w * (T17 + w * (T21 + \
-	w * (T25 + w * (T29 + w * T33)))))))
-#define VPOLY(w) (T7 + w * (T11 + w * (T15 + w * (T19 + w * (T23 + \
-	w * (T27 + w * T31))))))
-#elif LDBL_MANT_DIG == 113
-/*
- * ld128 version of __tan.c.  See __tan.c for most comments.
- */
-/*
- * Domain [-0.67434, 0.67434], range ~[-3.37e-36, 1.982e-37]
- * |tan(x)/x - t(x)| < 2**-117.8 (XXX should be ~1e-37)
- *
- * See __cosl.c for more details about the polynomial.
- */
-static const long double
-T3 = 0x1.5555555555555555555555555553p-2L,
-T5 = 0x1.1111111111111111111111111eb5p-3L,
-T7 = 0x1.ba1ba1ba1ba1ba1ba1ba1b694cd6p-5L,
-T9 = 0x1.664f4882c10f9f32d6bbe09d8bcdp-6L,
-T11 = 0x1.226e355e6c23c8f5b4f5762322eep-7L,
-T13 = 0x1.d6d3d0e157ddfb5fed8e84e27b37p-9L,
-T15 = 0x1.7da36452b75e2b5fce9ee7c2c92ep-10L,
-T17 = 0x1.355824803674477dfcf726649efep-11L,
-T19 = 0x1.f57d7734d1656e0aceb716f614c2p-13L,
-T21 = 0x1.967e18afcb180ed942dfdc518d6cp-14L,
-T23 = 0x1.497d8eea21e95bc7e2aa79b9f2cdp-15L,
-T25 = 0x1.0b132d39f055c81be49eff7afd50p-16L,
-T27 = 0x1.b0f72d33eff7bfa2fbc1059d90b6p-18L,
-T29 = 0x1.5ef2daf21d1113df38d0fbc00267p-19L,
-T31 = 0x1.1c77d6eac0234988cdaa04c96626p-20L,
-T33 = 0x1.cd2a5a292b180e0bdd701057dfe3p-22L,
-T35 = 0x1.75c7357d0298c01a31d0a6f7d518p-23L,
-T37 = 0x1.2f3190f4718a9a520f98f50081fcp-24L,
-pio4 = 0x1.921fb54442d18469898cc51701b8p-1L,
-pio4lo = 0x1.cd129024e088a67cc74020bbea60p-116L;
-static const double
-T39 =  0.000000028443389121318352,	/*  0x1e8a7592977938.0p-78 */
-T41 =  0.000000011981013102001973,	/*  0x19baa1b1223219.0p-79 */
-T43 =  0.0000000038303578044958070,	/*  0x107385dfb24529.0p-80 */
-T45 =  0.0000000034664378216909893,	/*  0x1dc6c702a05262.0p-81 */
-T47 = -0.0000000015090641701997785,	/* -0x19ecef3569ebb6.0p-82 */
-T49 =  0.0000000029449552300483952,	/*  0x194c0668da786a.0p-81 */
-T51 = -0.0000000022006995706097711,	/* -0x12e763b8845268.0p-81 */
-T53 =  0.0000000015468200913196612,	/*  0x1a92fc98c29554.0p-82 */
-T55 = -0.00000000061311613386849674,	/* -0x151106cbc779a9.0p-83 */
-T57 =  1.4912469681508012e-10;		/*  0x147edbdba6f43a.0p-85 */
-#define RPOLY(w) (T5 + w * (T9 + w * (T13 + w * (T17 + w * (T21 + \
-	w * (T25 + w * (T29 + w * (T33 + w * (T37 + w * (T41 + \
-	w * (T45 + w * (T49 + w * (T53 + w * T57)))))))))))))
-#define VPOLY(w) (T7 + w * (T11 + w * (T15 + w * (T19 + w * (T23 + \
-	w * (T27 + w * (T31 + w * (T35 + w * (T39 + w * (T43 + \
-	w * (T47 + w * (T51 + w * T55))))))))))))
-#endif
-
-long double __tanl(long double x, long double y, int odd) {
-	long double z, r, v, w, s, a, t;
-	int big, sign;
-
-	big = fabsl(x) >= 0.67434;
-	if (big) {
-		sign = 0;
-		if (x < 0) {
-			sign = 1;
-			x = -x;
-			y = -y;
-		}
-		x = (pio4 - x) + (pio4lo - y);
-		y = 0.0;
-	}
-	z = x * x;
-	w = z * z;
-	r = RPOLY(w);
-	v = z * VPOLY(w);
-	s = z * x;
-	r = y + z * (s * (r + v) + y) + T3 * s;
-	w = x + r;
-	if (big) {
-		s = 1 - 2*odd;
-		v = s - 2.0 * (x + (r - w * w / (w + s)));
-		return sign ? -v : v;
-	}
-	if (!odd)
-		return w;
-	/*
-	 * if allow error up to 2 ulp, simply return
-	 * -1.0 / (x+r) here
-	 */
-	/* compute -1.0 / (x+r) accurately */
-	z = w;
-	z = z + 0x1p32 - 0x1p32;
-	v = r - (z - x);        /* z+v = r+x */
-	t = a = -1.0 / w;       /* a = -1.0/w */
-	t = t + 0x1p32 - 0x1p32;
-	s = 1.0 + t * z;
-	return t + a * (s + t * v);
-}
-#endif
diff --git a/lib/libc/musl/src/math/tanl.c b/lib/libc/musl/src/math/tanl.c
deleted file mode 100644
index 6af067127a..0000000000
--- a/lib/libc/musl/src/math/tanl.c
+++ /dev/null
@@ -1,29 +0,0 @@
-#include "libm.h"
-
-#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
-long double tanl(long double x)
-{
-	return tan(x);
-}
-#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
-long double tanl(long double x)
-{
-	union ldshape u = {x};
-	long double y[2];
-	unsigned n;
-
-	u.i.se &= 0x7fff;
-	if (u.i.se == 0x7fff)
-		return x - x;
-	if (u.f < M_PI_4) {
-		if (u.i.se < 0x3fff - LDBL_MANT_DIG/2) {
-			/* raise inexact if x!=0 and underflow if subnormal */
-			FORCE_EVAL(u.i.se == 0 ? x*0x1p-120f : x+0x1p120f);
-			return x;
-		}
-		return __tanl(x, 0, 0);
-	}
-	n = __rem_pio2l(x, y);
-	return __tanl(y[0], y[1], n&1);
-}
-#endif
diff --git a/src/libs/mingw.zig b/src/libs/mingw.zig
index 99fad69a06..f7b73cc96e 100644
--- a/src/libs/mingw.zig
+++ b/src/libs/mingw.zig
@@ -967,7 +967,6 @@ const mingw32_x86_src = [_][]const u8{
     "math" ++ path.sep_str ++ "x86" ++ path.sep_str ++ "scalbnl.S",
     "math" ++ path.sep_str ++ "x86" ++ path.sep_str ++ "sinl.c",
     "math" ++ path.sep_str ++ "x86" ++ path.sep_str ++ "sinl_internal.S",
-    "math" ++ path.sep_str ++ "x86" ++ path.sep_str ++ "tanl.S",
     // ucrtbase
     "math" ++ path.sep_str ++ "nextafterl.c",
     "math" ++ path.sep_str ++ "nexttoward.c",
diff --git a/src/libs/musl.zig b/src/libs/musl.zig
index 649bef26a3..a3806437d7 100644
--- a/src/libs/musl.zig
+++ b/src/libs/musl.zig
@@ -1001,8 +1001,6 @@ const src_files = [_][]const u8{
     "musl/src/math/__tan.c",
     "musl/src/math/__tandf.c",
     "musl/src/math/tanhl.c",
-    "musl/src/math/__tanl.c",
-    "musl/src/math/tanl.c",
     "musl/src/math/tgamma.c",
     "musl/src/math/tgammaf.c",
     "musl/src/math/tgammal.c",
diff --git a/src/libs/wasi_libc.zig b/src/libs/wasi_libc.zig
index 953c3cbff5..aaf8968060 100644
--- a/src/libs/wasi_libc.zig
+++ b/src/libs/wasi_libc.zig
@@ -792,8 +792,6 @@ const libc_top_half_src_files = [_][]const u8{
     "musl/src/math/__tan.c",
     "musl/src/math/__tandf.c",
     "musl/src/math/tanhl.c",
-    "musl/src/math/__tanl.c",
-    "musl/src/math/tanl.c",
     "musl/src/math/tgamma.c",
     "musl/src/math/tgammaf.c",
     "musl/src/math/tgammal.c",