diff --git a/lib/c.zig b/lib/c.zig
index 39684264ce..dec072e409 100644
--- a/lib/c.zig
+++ b/lib/c.zig
@@ -14,6 +14,9 @@ else
     std.debug.no_panic;
 
 comptime {
+    _ = @import("c/inttypes.zig");
+    _ = @import("c/stdlib.zig");
+
     if (builtin.target.isMuslLibC() or builtin.target.isWasiLibC()) {
         // Files specific to musl and wasi-libc.
         _ = @import("c/string.zig");
diff --git a/lib/c/inttypes.zig b/lib/c/inttypes.zig
new file mode 100644
index 0000000000..34de671d0c
--- /dev/null
+++ b/lib/c/inttypes.zig
@@ -0,0 +1,20 @@
+const std = @import("std");
+const common = @import("common.zig");
+const builtin = @import("builtin");
+const intmax_t = std.c.intmax_t;
+
+comptime {
+    if (builtin.target.isMuslLibC() or builtin.target.isWasiLibC()) {
+        // Functions specific to musl and wasi-libc.
+        @export(&imaxabs, .{ .name = "imaxabs", .linkage = common.linkage, .visibility = common.visibility });
+    }
+}
+
+fn imaxabs(a: intmax_t) callconv(.c) intmax_t {
+    return @intCast(@abs(a));
+}
+
+test imaxabs {
+    const val: intmax_t = -10;
+    try std.testing.expectEqual(10, imaxabs(val));
+}
diff --git a/lib/c/stdlib.zig b/lib/c/stdlib.zig
new file mode 100644
index 0000000000..e427771640
--- /dev/null
+++ b/lib/c/stdlib.zig
@@ -0,0 +1,39 @@
+const std = @import("std");
+const common = @import("common.zig");
+const builtin = @import("builtin");
+
+comptime {
+    if (builtin.target.isMuslLibC() or builtin.target.isWasiLibC()) {
+        // Functions specific to musl and wasi-libc.
+        @export(&abs, .{ .name = "abs", .linkage = common.linkage, .visibility = common.visibility });
+        @export(&labs, .{ .name = "labs", .linkage = common.linkage, .visibility = common.visibility });
+        @export(&llabs, .{ .name = "llabs", .linkage = common.linkage, .visibility = common.visibility });
+    }
+}
+
+fn abs(a: c_int) callconv(.c) c_int {
+    return @intCast(@abs(a));
+}
+
+fn labs(a: c_long) callconv(.c) c_long {
+    return @intCast(@abs(a));
+}
+
+fn llabs(a: c_longlong) callconv(.c) c_longlong {
+    return @intCast(@abs(a));
+}
+
+test abs {
+    const val: c_int = -10;
+    try std.testing.expectEqual(10, abs(val));
+}
+
+test labs {
+    const val: c_long = -10;
+    try std.testing.expectEqual(10, labs(val));
+}
+
+test llabs {
+    const val: c_longlong = -10;
+    try std.testing.expectEqual(10, llabs(val));
+}
diff --git a/lib/libc/mingw/math/fabsf.c b/lib/libc/mingw/math/fabsf.c
deleted file mode 100644
index e7e9d8fa7a..0000000000
--- a/lib/libc/mingw/math/fabsf.c
+++ /dev/null
@@ -1,18 +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.
- */
-float fabsf (float x);
-
-float
-fabsf (float x)
-{
-#if defined(__x86_64__) || defined(_AMD64_) || defined(__arm__) || defined(_ARM_) || defined(__aarch64__) || defined(_ARM64_)
-  return __builtin_fabsf (x);
-#elif defined(__i386__) || defined(_X86_)
-  float res = 0.0F;
-  asm volatile ("fabs;" : "=t" (res) : "0" (x));
-  return res;
-#endif /* defined(__x86_64__) || defined(_AMD64_) || defined(__arm__) || defined(_ARM_) || defined(__aarch64__) || defined(_ARM64_) */
-}
diff --git a/lib/libc/mingw/math/fabsl.c b/lib/libc/mingw/math/fabsl.c
deleted file mode 100644
index 1df48cfa9c..0000000000
--- a/lib/libc/mingw/math/fabsl.c
+++ /dev/null
@@ -1,18 +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.
- */
-long double fabsl (long double x);
-
-long double
-fabsl (long double x)
-{
-#if defined(__x86_64__) || defined(_AMD64_) || defined(__i386__) || defined(_X86_)
-  long double res = 0.0L;
-  asm volatile ("fabs;" : "=t" (res) : "0" (x));
-  return res;
-#elif defined(__arm__) || defined(_ARM_) || defined(__aarch64__) || defined(_ARM64_)
-  return __builtin_fabsl (x);
-#endif /* defined(__x86_64__) || defined(_AMD64_) || defined(__i386__) || defined(_X86_) */
-}
diff --git a/lib/libc/musl/src/math/aarch64/fabs.c b/lib/libc/musl/src/math/aarch64/fabs.c
deleted file mode 100644
index 5c3ecaf44b..0000000000
--- a/lib/libc/musl/src/math/aarch64/fabs.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <math.h>
-
-double fabs(double x)
-{
-	__asm__ ("fabs %d0, %d1" : "=w"(x) : "w"(x));
-	return x;
-}
diff --git a/lib/libc/musl/src/math/aarch64/fabsf.c b/lib/libc/musl/src/math/aarch64/fabsf.c
deleted file mode 100644
index 7fde981793..0000000000
--- a/lib/libc/musl/src/math/aarch64/fabsf.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <math.h>
-
-float fabsf(float x)
-{
-	__asm__ ("fabs %s0, %s1" : "=w"(x) : "w"(x));
-	return x;
-}
diff --git a/lib/libc/musl/src/math/arm/fabs.c b/lib/libc/musl/src/math/arm/fabs.c
deleted file mode 100644
index 6e1d367d3d..0000000000
--- a/lib/libc/musl/src/math/arm/fabs.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if __ARM_PCS_VFP && __ARM_FP&8
-
-double fabs(double x)
-{
-	__asm__ ("vabs.f64 %P0, %P1" : "=w"(x) : "w"(x));
-	return x;
-}
-
-#else
-
-#include "../fabs.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/arm/fabsf.c b/lib/libc/musl/src/math/arm/fabsf.c
deleted file mode 100644
index 4a217c9889..0000000000
--- a/lib/libc/musl/src/math/arm/fabsf.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if __ARM_PCS_VFP && !BROKEN_VFP_ASM
-
-float fabsf(float x)
-{
-	__asm__ ("vabs.f32 %0, %1" : "=t"(x) : "t"(x));
-	return x;
-}
-
-#else
-
-#include "../fabsf.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/fabs.c b/lib/libc/musl/src/math/fabs.c
deleted file mode 100644
index e8258cfdbc..0000000000
--- a/lib/libc/musl/src/math/fabs.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <math.h>
-#include <stdint.h>
-
-double fabs(double x)
-{
-	union {double f; uint64_t i;} u = {x};
-	u.i &= -1ULL/2;
-	return u.f;
-}
diff --git a/lib/libc/musl/src/math/fabsf.c b/lib/libc/musl/src/math/fabsf.c
deleted file mode 100644
index 4efc8d686d..0000000000
--- a/lib/libc/musl/src/math/fabsf.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <math.h>
-#include <stdint.h>
-
-float fabsf(float x)
-{
-	union {float f; uint32_t i;} u = {x};
-	u.i &= 0x7fffffff;
-	return u.f;
-}
diff --git a/lib/libc/musl/src/math/fabsl.c b/lib/libc/musl/src/math/fabsl.c
deleted file mode 100644
index c4f36ec281..0000000000
--- a/lib/libc/musl/src/math/fabsl.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include "libm.h"
-#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
-long double fabsl(long double x)
-{
-	return fabs(x);
-}
-#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
-long double fabsl(long double x)
-{
-	union ldshape u = {x};
-
-	u.i.se &= 0x7fff;
-	return u.f;
-}
-#endif
diff --git a/lib/libc/musl/src/math/i386/fabs.c b/lib/libc/musl/src/math/i386/fabs.c
deleted file mode 100644
index 3967278639..0000000000
--- a/lib/libc/musl/src/math/i386/fabs.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <math.h>
-
-double fabs(double x)
-{
-	__asm__ ("fabs" : "+t"(x));
-	return x;
-}
diff --git a/lib/libc/musl/src/math/i386/fabsf.c b/lib/libc/musl/src/math/i386/fabsf.c
deleted file mode 100644
index d882eee349..0000000000
--- a/lib/libc/musl/src/math/i386/fabsf.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <math.h>
-
-float fabsf(float x)
-{
-	__asm__ ("fabs" : "+t"(x));
-	return x;
-}
diff --git a/lib/libc/musl/src/math/i386/fabsl.c b/lib/libc/musl/src/math/i386/fabsl.c
deleted file mode 100644
index cc1c9ed9c7..0000000000
--- a/lib/libc/musl/src/math/i386/fabsl.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <math.h>
-
-long double fabsl(long double x)
-{
-	__asm__ ("fabs" : "+t"(x));
-	return x;
-}
diff --git a/lib/libc/musl/src/math/mips/fabs.c b/lib/libc/musl/src/math/mips/fabs.c
deleted file mode 100644
index 0a5aa3b1d4..0000000000
--- a/lib/libc/musl/src/math/mips/fabs.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#if !defined(__mips_soft_float) && defined(__mips_abs2008)
-
-#include <math.h>
-
-double fabs(double x)
-{
-	double r;
-	__asm__("abs.d %0,%1" : "=f"(r) : "f"(x));
-	return r;
-}
-
-#else
-
-#include "../fabs.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/mips/fabsf.c b/lib/libc/musl/src/math/mips/fabsf.c
deleted file mode 100644
index 35307be6ab..0000000000
--- a/lib/libc/musl/src/math/mips/fabsf.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#if !defined(__mips_soft_float) && defined(__mips_abs2008)
-
-#include <math.h>
-
-float fabsf(float x)
-{
-	float r;
-	__asm__("abs.s %0,%1" : "=f"(r) : "f"(x));
-	return r;
-}
-
-#else
-
-#include "../fabsf.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/powerpc/fabs.c b/lib/libc/musl/src/math/powerpc/fabs.c
deleted file mode 100644
index 9453a3aa98..0000000000
--- a/lib/libc/musl/src/math/powerpc/fabs.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if defined(_SOFT_FLOAT) || defined(__NO_FPRS__) || defined(BROKEN_PPC_D_ASM)
-
-#include "../fabs.c"
-
-#else
-
-double fabs(double x)
-{
-	__asm__ ("fabs %0, %1" : "=d"(x) : "d"(x));
-	return x;
-}
-
-#endif
diff --git a/lib/libc/musl/src/math/powerpc/fabsf.c b/lib/libc/musl/src/math/powerpc/fabsf.c
deleted file mode 100644
index 2e9da588dd..0000000000
--- a/lib/libc/musl/src/math/powerpc/fabsf.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if defined(_SOFT_FLOAT) || defined(__NO_FPRS__)
-
-#include "../fabsf.c"
-
-#else
-
-float fabsf(float x)
-{
-	__asm__ ("fabs %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#endif
diff --git a/lib/libc/musl/src/math/powerpc64/fabs.c b/lib/libc/musl/src/math/powerpc64/fabs.c
deleted file mode 100644
index 6123c7535c..0000000000
--- a/lib/libc/musl/src/math/powerpc64/fabs.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <math.h>
-
-double fabs(double x)
-{
-	__asm__ ("fabs %0, %1" : "=d"(x) : "d"(x));
-	return x;
-}
diff --git a/lib/libc/musl/src/math/powerpc64/fabsf.c b/lib/libc/musl/src/math/powerpc64/fabsf.c
deleted file mode 100644
index e9e45643d2..0000000000
--- a/lib/libc/musl/src/math/powerpc64/fabsf.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <math.h>
-
-float fabsf(float x)
-{
-	__asm__ ("fabs %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
diff --git a/lib/libc/musl/src/math/riscv32/fabs.c b/lib/libc/musl/src/math/riscv32/fabs.c
deleted file mode 100644
index 5290b6f093..0000000000
--- a/lib/libc/musl/src/math/riscv32/fabs.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if __riscv_flen >= 64
-
-double fabs(double x)
-{
-	__asm__ ("fabs.d %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#else
-
-#include "../fabs.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/riscv32/fabsf.c b/lib/libc/musl/src/math/riscv32/fabsf.c
deleted file mode 100644
index f5032e354d..0000000000
--- a/lib/libc/musl/src/math/riscv32/fabsf.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if __riscv_flen >= 32
-
-float fabsf(float x)
-{
-	__asm__ ("fabs.s %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#else
-
-#include "../fabsf.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/riscv64/fabs.c b/lib/libc/musl/src/math/riscv64/fabs.c
deleted file mode 100644
index 5290b6f093..0000000000
--- a/lib/libc/musl/src/math/riscv64/fabs.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if __riscv_flen >= 64
-
-double fabs(double x)
-{
-	__asm__ ("fabs.d %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#else
-
-#include "../fabs.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/riscv64/fabsf.c b/lib/libc/musl/src/math/riscv64/fabsf.c
deleted file mode 100644
index f5032e354d..0000000000
--- a/lib/libc/musl/src/math/riscv64/fabsf.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if __riscv_flen >= 32
-
-float fabsf(float x)
-{
-	__asm__ ("fabs.s %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#else
-
-#include "../fabsf.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/s390x/fabs.c b/lib/libc/musl/src/math/s390x/fabs.c
deleted file mode 100644
index 9bb51cb5ff..0000000000
--- a/lib/libc/musl/src/math/s390x/fabs.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if defined(__HTM__) || __ARCH__ >= 9
-
-double fabs(double x)
-{
-	__asm__ ("lpdbr %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#else
-
-#include "../fabs.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/s390x/fabsf.c b/lib/libc/musl/src/math/s390x/fabsf.c
deleted file mode 100644
index 9fd96bc9d2..0000000000
--- a/lib/libc/musl/src/math/s390x/fabsf.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if defined(__HTM__) || __ARCH__ >= 9
-
-float fabsf(float x)
-{
-	__asm__ ("lpebr %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#else
-
-#include "../fabsf.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/s390x/fabsl.c b/lib/libc/musl/src/math/s390x/fabsl.c
deleted file mode 100644
index 65f1005d4e..0000000000
--- a/lib/libc/musl/src/math/s390x/fabsl.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <math.h>
-
-#if defined(__HTM__) || __ARCH__ >= 9
-
-long double fabsl(long double x)
-{
-	__asm__ ("lpxbr %0, %1" : "=f"(x) : "f"(x));
-	return x;
-}
-
-#else
-
-#include "../fabsl.c"
-
-#endif
diff --git a/lib/libc/musl/src/math/x32/fabs.s b/lib/libc/musl/src/math/x32/fabs.s
deleted file mode 100644
index 5715005e33..0000000000
--- a/lib/libc/musl/src/math/x32/fabs.s
+++ /dev/null
@@ -1,9 +0,0 @@
-.global fabs
-.type fabs,@function
-fabs:
-	xor %eax,%eax
-	dec %rax
-	shr %rax
-	movq %rax,%xmm1
-	andpd %xmm1,%xmm0
-	ret
diff --git a/lib/libc/musl/src/math/x32/fabsf.s b/lib/libc/musl/src/math/x32/fabsf.s
deleted file mode 100644
index 501a1f1755..0000000000
--- a/lib/libc/musl/src/math/x32/fabsf.s
+++ /dev/null
@@ -1,7 +0,0 @@
-.global fabsf
-.type fabsf,@function
-fabsf:
-	mov $0x7fffffff,%eax
-	movq %rax,%xmm1
-	andps %xmm1,%xmm0
-	ret
diff --git a/lib/libc/musl/src/math/x32/fabsl.s b/lib/libc/musl/src/math/x32/fabsl.s
deleted file mode 100644
index 4f215df5c6..0000000000
--- a/lib/libc/musl/src/math/x32/fabsl.s
+++ /dev/null
@@ -1,6 +0,0 @@
-.global fabsl
-.type fabsl,@function
-fabsl:
-	fldt 8(%esp)
-	fabs
-	ret
diff --git a/lib/libc/musl/src/math/x86_64/fabs.c b/lib/libc/musl/src/math/x86_64/fabs.c
deleted file mode 100644
index 1656247770..0000000000
--- a/lib/libc/musl/src/math/x86_64/fabs.c
+++ /dev/null
@@ -1,10 +0,0 @@
-#include <math.h>
-
-double fabs(double x)
-{
-	double t;
-	__asm__ ("pcmpeqd %0, %0" : "=x"(t));          // t = ~0
-	__asm__ ("psrlq   $1, %0" : "+x"(t));          // t >>= 1
-	__asm__ ("andps   %1, %0" : "+x"(x) : "x"(t)); // x &= t
-	return x;
-}
diff --git a/lib/libc/musl/src/math/x86_64/fabsf.c b/lib/libc/musl/src/math/x86_64/fabsf.c
deleted file mode 100644
index 36ea7481fc..0000000000
--- a/lib/libc/musl/src/math/x86_64/fabsf.c
+++ /dev/null
@@ -1,10 +0,0 @@
-#include <math.h>
-
-float fabsf(float x)
-{
-	float t;
-	__asm__ ("pcmpeqd %0, %0" : "=x"(t));          // t = ~0
-	__asm__ ("psrld   $1, %0" : "+x"(t));          // t >>= 1
-	__asm__ ("andps   %1, %0" : "+x"(x) : "x"(t)); // x &= t
-	return x;
-}
diff --git a/lib/libc/musl/src/math/x86_64/fabsl.c b/lib/libc/musl/src/math/x86_64/fabsl.c
deleted file mode 100644
index cc1c9ed9c7..0000000000
--- a/lib/libc/musl/src/math/x86_64/fabsl.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <math.h>
-
-long double fabsl(long double x)
-{
-	__asm__ ("fabs" : "+t"(x));
-	return x;
-}
diff --git a/lib/libc/musl/src/stdlib/abs.c b/lib/libc/musl/src/stdlib/abs.c
deleted file mode 100644
index e721fdc2b1..0000000000
--- a/lib/libc/musl/src/stdlib/abs.c
+++ /dev/null
@@ -1,6 +0,0 @@
-#include <stdlib.h>
-
-int abs(int a)
-{
-	return a>0 ? a : -a;
-}
diff --git a/lib/libc/musl/src/stdlib/imaxabs.c b/lib/libc/musl/src/stdlib/imaxabs.c
deleted file mode 100644
index 8100181930..0000000000
--- a/lib/libc/musl/src/stdlib/imaxabs.c
+++ /dev/null
@@ -1,6 +0,0 @@
-#include <inttypes.h>
-
-intmax_t imaxabs(intmax_t a)
-{
-	return a>0 ? a : -a;
-}
diff --git a/lib/libc/musl/src/stdlib/labs.c b/lib/libc/musl/src/stdlib/labs.c
deleted file mode 100644
index 83ddb1475c..0000000000
--- a/lib/libc/musl/src/stdlib/labs.c
+++ /dev/null
@@ -1,6 +0,0 @@
-#include <stdlib.h>
-
-long labs(long a)
-{
-	return a>0 ? a : -a;
-}
diff --git a/lib/libc/musl/src/stdlib/llabs.c b/lib/libc/musl/src/stdlib/llabs.c
deleted file mode 100644
index 9dfaf5cf76..0000000000
--- a/lib/libc/musl/src/stdlib/llabs.c
+++ /dev/null
@@ -1,6 +0,0 @@
-#include <stdlib.h>
-
-long long llabs(long long a)
-{
-	return a>0 ? a : -a;
-}
diff --git a/lib/std/c.zig b/lib/std/c.zig
index e61c8990c3..1cfd441072 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -10822,6 +10822,9 @@ else
         b: c_longdouble,
     };
 
+pub const intmax_t = i64;
+pub const uintmax_t = u64;
+
 pub extern "c" fn pthread_getthreadid_np() c_int;
 pub extern "c" fn pthread_set_name_np(thread: pthread_t, name: [*:0]const u8) void;
 pub extern "c" fn pthread_get_name_np(thread: pthread_t, name: [*:0]u8, len: usize) void;
diff --git a/src/libs/mingw.zig b/src/libs/mingw.zig
index 640ed908f5..59c4cd0e4a 100644
--- a/src/libs/mingw.zig
+++ b/src/libs/mingw.zig
@@ -574,7 +574,6 @@ const mingw32_generic_src = [_][]const u8{
     "gdtoa" ++ path.sep_str ++ "sum.c",
     "gdtoa" ++ path.sep_str ++ "ulp.c",
     "math" ++ path.sep_str ++ "coshl.c",
-    "math" ++ path.sep_str ++ "fabsl.c",
     "math" ++ path.sep_str ++ "fp_consts.c",
     "math" ++ path.sep_str ++ "fp_constsf.c",
     "math" ++ path.sep_str ++ "fp_constsl.c",
@@ -946,7 +945,6 @@ const mingw32_x86_src = [_][]const u8{
     "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 ++ "fabsf.c",
     "math" ++ path.sep_str ++ "nextafterl.c",
     "math" ++ path.sep_str ++ "nexttoward.c",
     "math" ++ path.sep_str ++ "nexttowardf.c",
diff --git a/src/libs/musl.zig b/src/libs/musl.zig
index 4ae86f0214..e9d213b485 100644
--- a/src/libs/musl.zig
+++ b/src/libs/musl.zig
@@ -825,8 +825,6 @@ const src_files = [_][]const u8{
     "musl/src/malloc/replaced.c",
     "musl/src/math/aarch64/ceil.c",
     "musl/src/math/aarch64/ceilf.c",
-    "musl/src/math/aarch64/fabs.c",
-    "musl/src/math/aarch64/fabsf.c",
     "musl/src/math/aarch64/floor.c",
     "musl/src/math/aarch64/floorf.c",
     "musl/src/math/aarch64/fma.c",
@@ -859,8 +857,6 @@ const src_files = [_][]const u8{
     "musl/src/math/acoshf.c",
     "musl/src/math/acoshl.c",
     "musl/src/math/acosl.c",
-    "musl/src/math/arm/fabs.c",
-    "musl/src/math/arm/fabsf.c",
     "musl/src/math/arm/fma.c",
     "musl/src/math/arm/fmaf.c",
     "musl/src/math/arm/sqrt.c",
@@ -917,9 +913,6 @@ const src_files = [_][]const u8{
     "musl/src/math/expm1l.c",
     "musl/src/math/__expo2.c",
     "musl/src/math/__expo2f.c",
-    "musl/src/math/fabs.c",
-    "musl/src/math/fabsf.c",
-    "musl/src/math/fabsl.c",
     "musl/src/math/fdim.c",
     "musl/src/math/fdimf.c",
     "musl/src/math/fdiml.c",
@@ -968,9 +961,6 @@ const src_files = [_][]const u8{
     "musl/src/math/i386/exp_ld.s",
     "musl/src/math/i386/expl.s",
     "musl/src/math/i386/expm1l.s",
-    "musl/src/math/i386/fabs.c",
-    "musl/src/math/i386/fabsf.c",
-    "musl/src/math/i386/fabsl.c",
     "musl/src/math/i386/floorf.s",
     "musl/src/math/i386/floorl.s",
     "musl/src/math/i386/floor.s",
@@ -1083,8 +1073,6 @@ const src_files = [_][]const u8{
     "musl/src/math/__math_uflowf.c",
     "musl/src/math/__math_xflow.c",
     "musl/src/math/__math_xflowf.c",
-    "musl/src/math/mips/fabs.c",
-    "musl/src/math/mips/fabsf.c",
     "musl/src/math/mips/sqrt.c",
     "musl/src/math/mips/sqrtf.c",
     "musl/src/math/modf.c",
@@ -1107,8 +1095,6 @@ const src_files = [_][]const u8{
     "musl/src/math/pow_data.c",
     "musl/src/math/powerpc64/ceil.c",
     "musl/src/math/powerpc64/ceilf.c",
-    "musl/src/math/powerpc64/fabs.c",
-    "musl/src/math/powerpc64/fabsf.c",
     "musl/src/math/powerpc64/floor.c",
     "musl/src/math/powerpc64/floorf.c",
     "musl/src/math/powerpc64/fma.c",
@@ -1127,8 +1113,6 @@ const src_files = [_][]const u8{
     "musl/src/math/powerpc64/sqrtf.c",
     "musl/src/math/powerpc64/trunc.c",
     "musl/src/math/powerpc64/truncf.c",
-    "musl/src/math/powerpc/fabs.c",
-    "musl/src/math/powerpc/fabsf.c",
     "musl/src/math/powerpc/fma.c",
     "musl/src/math/powerpc/fmaf.c",
     "musl/src/math/powerpc/sqrt.c",
@@ -1151,8 +1135,6 @@ const src_files = [_][]const u8{
     "musl/src/math/rintl.c",
     "musl/src/math/riscv32/copysign.c",
     "musl/src/math/riscv32/copysignf.c",
-    "musl/src/math/riscv32/fabs.c",
-    "musl/src/math/riscv32/fabsf.c",
     "musl/src/math/riscv32/fma.c",
     "musl/src/math/riscv32/fmaf.c",
     "musl/src/math/riscv32/fmax.c",
@@ -1163,8 +1145,6 @@ const src_files = [_][]const u8{
     "musl/src/math/riscv32/sqrtf.c",
     "musl/src/math/riscv64/copysign.c",
     "musl/src/math/riscv64/copysignf.c",
-    "musl/src/math/riscv64/fabs.c",
-    "musl/src/math/riscv64/fabsf.c",
     "musl/src/math/riscv64/fma.c",
     "musl/src/math/riscv64/fmaf.c",
     "musl/src/math/riscv64/fmax.c",
@@ -1179,9 +1159,6 @@ const src_files = [_][]const u8{
     "musl/src/math/s390x/ceil.c",
     "musl/src/math/s390x/ceilf.c",
     "musl/src/math/s390x/ceill.c",
-    "musl/src/math/s390x/fabs.c",
-    "musl/src/math/s390x/fabsf.c",
-    "musl/src/math/s390x/fabsl.c",
     "musl/src/math/s390x/floor.c",
     "musl/src/math/s390x/floorf.c",
     "musl/src/math/s390x/floorl.c",
@@ -1255,9 +1232,6 @@ const src_files = [_][]const u8{
     "musl/src/math/x32/exp2l.s",
     "musl/src/math/x32/expl.s",
     "musl/src/math/x32/expm1l.s",
-    "musl/src/math/x32/fabsf.s",
-    "musl/src/math/x32/fabsl.s",
-    "musl/src/math/x32/fabs.s",
     "musl/src/math/x32/floorl.s",
     "musl/src/math/x32/fma.c",
     "musl/src/math/x32/fmaf.c",
@@ -1287,9 +1261,6 @@ const src_files = [_][]const u8{
     "musl/src/math/x86_64/exp2l.s",
     "musl/src/math/x86_64/expl.s",
     "musl/src/math/x86_64/expm1l.s",
-    "musl/src/math/x86_64/fabs.c",
-    "musl/src/math/x86_64/fabsf.c",
-    "musl/src/math/x86_64/fabsl.c",
     "musl/src/math/x86_64/floorl.s",
     "musl/src/math/x86_64/fma.c",
     "musl/src/math/x86_64/fmaf.c",
@@ -1809,7 +1780,6 @@ const src_files = [_][]const u8{
     "musl/src/stdio/vwscanf.c",
     "musl/src/stdio/wprintf.c",
     "musl/src/stdio/wscanf.c",
-    "musl/src/stdlib/abs.c",
     "musl/src/stdlib/atof.c",
     "musl/src/stdlib/atoi.c",
     "musl/src/stdlib/atol.c",
@@ -1819,11 +1789,8 @@ const src_files = [_][]const u8{
     "musl/src/stdlib/ecvt.c",
     "musl/src/stdlib/fcvt.c",
     "musl/src/stdlib/gcvt.c",
-    "musl/src/stdlib/imaxabs.c",
     "musl/src/stdlib/imaxdiv.c",
-    "musl/src/stdlib/labs.c",
     "musl/src/stdlib/ldiv.c",
-    "musl/src/stdlib/llabs.c",
     "musl/src/stdlib/lldiv.c",
     "musl/src/stdlib/qsort.c",
     "musl/src/stdlib/qsort_nr.c",
diff --git a/src/libs/wasi_libc.zig b/src/libs/wasi_libc.zig
index f718f39793..302a47c623 100644
--- a/src/libs/wasi_libc.zig
+++ b/src/libs/wasi_libc.zig
@@ -751,7 +751,6 @@ const libc_top_half_src_files = [_][]const u8{
     "musl/src/math/expm1.c",
     "musl/src/math/expm1f.c",
     "musl/src/math/expm1l.c",
-    "musl/src/math/fabsl.c",
     "musl/src/math/fdim.c",
     "musl/src/math/fdimf.c",
     "musl/src/math/fdiml.c",
@@ -1024,7 +1023,6 @@ const libc_top_half_src_files = [_][]const u8{
     "musl/src/stdio/vwscanf.c",
     "musl/src/stdio/wprintf.c",
     "musl/src/stdio/wscanf.c",
-    "musl/src/stdlib/abs.c",
     "musl/src/stdlib/atof.c",
     "musl/src/stdlib/atoi.c",
     "musl/src/stdlib/atol.c",
@@ -1034,11 +1032,8 @@ const libc_top_half_src_files = [_][]const u8{
     "musl/src/stdlib/ecvt.c",
     "musl/src/stdlib/fcvt.c",
     "musl/src/stdlib/gcvt.c",
-    "musl/src/stdlib/imaxabs.c",
     "musl/src/stdlib/imaxdiv.c",
-    "musl/src/stdlib/labs.c",
     "musl/src/stdlib/ldiv.c",
-    "musl/src/stdlib/llabs.c",
     "musl/src/stdlib/lldiv.c",
     "musl/src/stdlib/qsort.c",
     "musl/src/stdlib/qsort_nr.c",