From 7dc51f61ddad8705e89609695d38cdfd710e914d Mon Sep 17 00:00:00 2001
From: danielryb <59661841+danielryb@users.noreply.github.com>
Date: Thu, 11 Sep 2025 15:56:54 +0200
Subject: [PATCH] add new stdlib overrides

---
 include/libc/math.h                   | 230 ++++++++++++++++++++++++++
 include/libc/stdlib.h                 |  11 ++
 include/libc/stdlib_override/ctype.h  |  10 ++
 include/libc/stdlib_override/limits.h |  11 ++
 include/libc/stdlib_override/math.h   |  11 ++
 include/libc/stdlib_override/stdint.h |  11 ++
 include/libc/stdlib_override/string.h |  11 ++
 include/libc/stdlib_override/wctype.h |  11 ++
 include/libc/string.h                 |   5 +
 9 files changed, 311 insertions(+)
 create mode 100644 include/libc/stdlib_override/ctype.h
 create mode 100644 include/libc/stdlib_override/limits.h
 create mode 100644 include/libc/stdlib_override/math.h
 create mode 100644 include/libc/stdlib_override/stdint.h
 create mode 100644 include/libc/stdlib_override/string.h
 create mode 100644 include/libc/stdlib_override/wctype.h

diff --git a/include/libc/math.h b/include/libc/math.h
index c1c221e..23160dd 100644
--- a/include/libc/math.h
+++ b/include/libc/math.h
@@ -28,4 +28,234 @@ typedef double double_t;
 #define fpclassify(x) __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL, FP_SUBNORMAL, FP_ZERO, x)
 #define fabsf(f) __builtin_fabsf((float)(f))
 
+#define isnan(x) __builtin_isnan
+#define isinf(x) __builtin_isinf
+#define isfinite(x) __builtin_isfinite
+#define signbit(x) __builtin_signbit
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+double      acos(double);
+float       acosf(float);
+long double acosl(long double);
+
+double      asin(double);
+float       asinf(float);
+long double asinl(long double);
+
+double      atan(double);
+float       atanf(float);
+long double atanl(long double);
+
+double      atan2(double, double);
+float       atan2f(float, float);
+long double atan2l(long double, long double);
+
+double      ceil(double);
+float       ceilf(float);
+long double ceill(long double);
+
+double      cos(double);
+float       cosf(float);
+long double cosl(long double);
+
+double      cosh(double);
+float       coshf(float);
+long double coshl(long double);
+
+double      exp(double);
+float       expf(float);
+long double expl(long double);
+
+double      fabs(double);
+long double fabsl(long double);
+
+double      cosh(double);
+float       coshf(float);
+long double coshl(long double);
+
+double      exp(double);
+float       expf(float);
+long double expl(long double);
+
+double      floor(double);
+float       floorf(float);
+long double floorl(long double);
+
+double      fmod(double, double);
+float       fmodf(float, float);
+long double fmodl(long double, long double);
+
+double      pow(double, double);
+float       powf(float, float);
+long double powl(long double, long double);
+
+double      frexp(double, int*);
+float       frexpf(float, int*);
+long double frexpl(long double, int*);
+
+double      ldexp(double, int);
+float       ldexpf(float, int);
+long double ldexpl(long double, int);
+
+double      log(double);
+float       logf(float);
+long double logl(long double);
+
+double      log10(double);
+float       log10f(float);
+long double log10l(long double);
+
+double      modf(double, double*);
+float       modff(float, float*);
+long double modfl(long double, long double*);
+
+double      sin(double);
+float       sinf(float);
+long double sinl(long double);
+
+double      sinh(double);
+float       sinhf(float);
+long double sinhl(long double);
+
+
+double      sqrt(double);
+float       sqrtf(float);
+long double sqrtl(long double);
+
+
+double      tan(double);
+float       tanf(float);
+long double tanl(long double);
+
+
+double      tanh(double);
+float       tanhf(float);
+long double tanhl(long double);
+
+
+double      acosh(double);
+float       acoshf(float);
+long double acoshl(long double);
+
+
+double      asinh(double);
+float       asinhf(float);
+long double asinhl(long double);
+
+
+double      atanh(double);
+float       atanhf(float);
+long double atanhl(long double);
+
+
+double      cbrt(double);
+float       cbrtf(float);
+long double cbrtl(long double);
+
+
+double      erf(double);
+float       erff(float);
+long double erfl(long double);
+
+
+double      exp2(double);
+float       exp2f(float);
+long double exp2l(long double);
+
+
+double      expm1(double);
+float       expm1f(float);
+long double expm1l(long double);
+
+
+double      fdim(double, double);
+float       fdimf(float, float);
+long double fdiml(long double, long double);
+
+
+double      erfc(double);
+float       erfcf(float);
+long double erfcl(long double);
+
+
+double      fmax(double, double);
+float       fmaxf(float, float);
+long double fmaxl(long double, long double);
+
+
+double      fmin(double, double);
+float       fminf(float, float);
+long double fminl(long double, long double);
+
+
+double      hypot(double, double);
+float       hypotf(float, float);
+long double hypotl(long double, long double);
+
+
+double      ilogb(double);
+float       ilogbf(float);
+long double ilogbl(long double);
+
+
+double      lgamma(double);
+float       lgammaf(float);
+long double lgammal(long double);
+
+
+double      log1p(double);
+float       log1pf(float);
+long double log1pl(long double);
+
+
+double      log2(double);
+float       log2f(float);
+long double log2l(long double);
+
+double      logb(double);
+float       logbf(float);
+long double logbl(long double);
+
+
+double      nearbyint(double);
+float       nearbyintf(float);
+long double nearbyintl(long double);
+
+
+double      nextafter(double, double);
+float       nextafterf(float, float);
+long double nextafterl(long double, long double);
+
+
+double      nexttoward(double, long double);
+float       nexttowardf(float, long double);
+long double nexttowardl(long double, long double);
+
+double      remainder(double, double);
+float       remainderf(float, float);
+long double remainderl(long double, long double);
+
+double      remquo(double, double, int*);
+float       remquof(float, float, int*);
+long double remquol(long double, long double, int*);
+
+double      scalbln(double, long);
+float       scalblnf(float, long);
+long double scalblnl(long double, long);
+
+double      scalbn(double, int);
+float       scalbnf(float, int);
+long double scalbnl(long double, int);
+
+double      tgamma(double);
+float       tgammaf(float);
+long double tgammal(long double);
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif
diff --git a/include/libc/stdlib.h b/include/libc/stdlib.h
index 2c9c8d7..6a46b8a 100644
--- a/include/libc/stdlib.h
+++ b/include/libc/stdlib.h
@@ -18,6 +18,11 @@ typedef struct {
     /* 0x8 */ long long rem;
 } lldiv_t;
 
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 ldiv_t ldiv(long numer, long denom);
 lldiv_t lldiv(long long numer, long long denom);
 
@@ -37,4 +42,10 @@ int snprintf(char* __restrict__ s, size_t n, const char* __restrict__ format, ..
 void *malloc( size_t size );
 void free(void* ptr);
 
+int posix_memalign(void **memptr, size_t alignment, size_t size);
+
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* STDLIB_H */
\ No newline at end of file
diff --git a/include/libc/stdlib_override/ctype.h b/include/libc/stdlib_override/ctype.h
new file mode 100644
index 0000000..69ed40d
--- /dev/null
+++ b/include/libc/stdlib_override/ctype.h
@@ -0,0 +1,10 @@
+#ifndef __STDLIB_OVERRIDE_CTYPE_H__
+#define __STDLIB_OVERRIDE_CTYPE_H__
+
+#define _CTYPE_H
+
+#if __has_include_next(<math.h>)
+#  include_next <ctype.h>
+#endif
+
+#endif
\ No newline at end of file
diff --git a/include/libc/stdlib_override/limits.h b/include/libc/stdlib_override/limits.h
new file mode 100644
index 0000000..6eb3584
--- /dev/null
+++ b/include/libc/stdlib_override/limits.h
@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_LIMITS_H__
+#define __STDLIB_OVERRIDE_LIMITS_H__
+
+#define _LIMITS_H
+#include "libc/limits.h"
+
+// #if __has_include_next(<limits.h>)
+// #  include_next <limits.h>
+// #endif
+
+#endif
\ No newline at end of file
diff --git a/include/libc/stdlib_override/math.h b/include/libc/stdlib_override/math.h
new file mode 100644
index 0000000..8b66b37
--- /dev/null
+++ b/include/libc/stdlib_override/math.h
@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_MATH_H__
+#define __STDLIB_OVERRIDE_MATH_H__
+
+#define _MATH_H
+#include "libc/math.h"
+
+#if __has_include_next(<math.h>)
+#  include_next <math.h>
+#endif
+
+#endif
\ No newline at end of file
diff --git a/include/libc/stdlib_override/stdint.h b/include/libc/stdlib_override/stdint.h
new file mode 100644
index 0000000..b776183
--- /dev/null
+++ b/include/libc/stdlib_override/stdint.h
@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_STDINT_H__
+#define __STDLIB_OVERRIDE_STDINT_H__
+
+#define _STDINT_H
+#include "libc/stdint.h"
+
+#if __has_include_next(<stdint.h>)
+#  include_next <stdint.h>
+#endif
+
+#endif
\ No newline at end of file
diff --git a/include/libc/stdlib_override/string.h b/include/libc/stdlib_override/string.h
new file mode 100644
index 0000000..77f7245
--- /dev/null
+++ b/include/libc/stdlib_override/string.h
@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_STRING_H__
+#define __STDLIB_OVERRIDE_STRING_H__
+
+#define _STRING_H
+#include "libc/string.h"
+
+#if __has_include_next(<string.h>)
+#  include_next <string.h>
+#endif
+
+#endif
\ No newline at end of file
diff --git a/include/libc/stdlib_override/wctype.h b/include/libc/stdlib_override/wctype.h
new file mode 100644
index 0000000..1c55020
--- /dev/null
+++ b/include/libc/stdlib_override/wctype.h
@@ -0,0 +1,11 @@
+#ifndef __STDLIB_OVERRIDE_WCTYPE_H__
+#define __STDLIB_OVERRIDE_WCTYPE_H__
+
+#define _WCTYPE_H
+#include "libc/wchar.h"
+
+#if __has_include_next(<math.h>)
+#  include_next <wctype.h>
+#endif
+
+#endif
\ No newline at end of file
diff --git a/include/libc/string.h b/include/libc/string.h
index c7d59e8..2385c42 100644
--- a/include/libc/string.h
+++ b/include/libc/string.h
@@ -17,6 +17,11 @@ char* strcpy(char* dst, const char* src);
 void* memmove(void* dst, const void* src, size_t size);
 int memcmp(const void* lhs, const void* rhs, size_t count);
 
+const char* strpbrk(const char*, const char*);
+const char* strrchr(const char*, int);
+const void* memchr(const void*, int, size_t);
+const char* strstr(const char*, const char*);
+
 #ifdef __cplusplus
 }
 #endif