diff -r a569148841ff -r efbd59642577 ucx/utils.c
--- a/ucx/utils.c	Sun Apr 16 14:12:24 2023 +0200
+++ b/ucx/utils.c	Fri Apr 21 21:25:32 2023 +0200
@@ -1,7 +1,7 @@
 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
- * Copyright 2017 Mike Becker, Olaf Wintermann All rights reserved.
+ * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -26,263 +26,69 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "ucx/utils.h"
+#include "cx/utils.h"
 
-#include <math.h>
-#include <stdio.h>
-#include <limits.h>
-#include <errno.h>
+#define CX_STREAM_BCOPY_BUF_SIZE 8192
+#define CX_STREAM_COPY_BUF_SIZE 1024
 
-/* COPY FUCNTIONS */
-void* ucx_strcpy(const void* s, void* data) {
-    const char *str = (const char*) s;
-    size_t n = 1+strlen(str);
-    char *cpy = (char*) malloc(n);
-    memcpy(cpy, str, n);
-    return cpy;
-}
-
-void* ucx_memcpy(const void* m, void* n) {
-    size_t k = *((size_t*)n);
-    void *cpy = malloc(k);
-    memcpy(cpy, m, k);
-    return cpy;
-}
-
-size_t ucx_stream_bncopy(void *src, void *dest, read_func readfnc,
-        write_func writefnc, char* buf, size_t bufsize, size_t n) {
-    if(n == 0 || bufsize == 0) {
+size_t cx_stream_bncopy(
+        void *src,
+        void *dest,
+        cx_read_func rfnc,
+        cx_write_func wfnc,
+        char *buf,
+        size_t bufsize,
+        size_t n
+) {
+    if (n == 0) {
         return 0;
     }
-    
-    char *lbuf;    
+
+    char *lbuf;
     size_t ncp = 0;
-    
-    if(buf) {
+
+    if (buf) {
+        if (bufsize == 0) return 0;
         lbuf = buf;
     } else {
-        lbuf = (char*)malloc(bufsize);
-        if(lbuf == NULL) {
+        if (bufsize == 0) bufsize = CX_STREAM_BCOPY_BUF_SIZE;
+        lbuf = malloc(bufsize);
+        if (lbuf == NULL) {
             return 0;
         }
     }
-    
+
     size_t r;
     size_t rn = bufsize > n ? n : bufsize;
-    while((r = readfnc(lbuf, 1, rn, src)) != 0) {
-        r = writefnc(lbuf, 1, r, dest);
+    while ((r = rfnc(lbuf, 1, rn, src)) != 0) {
+        r = wfnc(lbuf, 1, r, dest);
         ncp += r;
         n -= r;
         rn = bufsize > n ? n : bufsize;
-        if(r == 0 || n == 0) {
+        if (r == 0 || n == 0) {
             break;
         }
     }
-    
+
     if (lbuf != buf) {
         free(lbuf);
     }
-    
+
     return ncp;
 }
 
-/* COMPARE FUNCTIONS */
-
-int ucx_cmp_str(const void *s1, const void *s2, void *data) {
-    return strcmp((const char*)s1, (const char*)s2);
-}
-
-int ucx_cmp_strn(const void *s1, const void *s2, void *n) {
-    return strncmp((const char*)s1, (const char*)s2, *((size_t*) n));
-}
-
-int ucx_cmp_sstr(const void *s1, const void *s2, void *data) {
-    sstr_t a = *(const sstr_t*) s1;
-    sstr_t b = *(const sstr_t*) s2;
-    return sstrcmp(a, b);
-}
-
-int ucx_cmp_int(const void *i1, const void *i2, void *data) {
-   int a = *((const int*) i1);
-   int b = *((const int*) i2);
-   if (a == b) {
-       return 0;
-   } else {
-       return a < b ? -1 : 1;
-   }
-}
-
-int ucx_cmp_longint(const void *i1, const void *i2, void *data) {
-   int a = *((const long int*) i1);
-   int b = *((const long int*) i2);
-   if (a == b) {
-       return 0;
-   } else {
-       return a < b ? -1 : 1;
-   }
-}
-
-intmax_t ucx_dist_int(const void *i1, const void *i2, void *data) {
-   intmax_t a = *((const int*) i1);
-   intmax_t b = *((const int*) i2);
-   return a - b;
-}
-
-intmax_t ucx_dist_longint(const void *i1, const void *i2, void *data) {
-   intmax_t a = *((const long int*) i1);
-   intmax_t b = *((const long int*) i2);
-   return a - b;
-}
-
-int ucx_cmp_float(const void *f1, const void *f2, void *epsilon) {
-   float a = *((const float*) f1);
-   float b = *((const float*) f2);
-   float e = !epsilon ? 1e-6f : *((float*)epsilon);
-   if (fabsf(a - b) < e) {
-       return 0;
-   } else {
-       return a < b ? -1 : 1;
-   }
-}
-
-int ucx_cmp_double(const void *d1, const void *d2, void *epsilon) {
-   double a = *((const double*) d1);
-   double b = *((const double*) d2);
-   double e = !epsilon ? 1e-14 : *((double*)epsilon);
-   if (fabs(a - b) < e) {
-       return 0;
-   } else {
-       return a < b ? -1 : 1;
-   }
-}
-
-int ucx_cmp_ptr(const void *ptr1, const void *ptr2, void *data) {
-    const intptr_t p1 = (const intptr_t) ptr1;
-    const intptr_t p2 = (const intptr_t) ptr2;
-    if (p1 == p2) {
-        return 0;
-    } else {
-        return p1  < p2 ? -1 : 1;
-    }
-}
-
-int ucx_cmp_mem(const void *ptr1, const void *ptr2, void *n) {
-    return memcmp(ptr1, ptr2, *((size_t*)n));
+size_t cx_stream_ncopy(
+        void *src,
+        void *dest,
+        cx_read_func rfnc,
+        cx_write_func wfnc,
+        size_t n
+) {
+    char buf[CX_STREAM_COPY_BUF_SIZE];
+    return cx_stream_bncopy(src, dest, rfnc, wfnc,
+                            buf, CX_STREAM_COPY_BUF_SIZE, n);
 }
 
-/* PRINTF FUNCTIONS */
-
-#ifdef va_copy
-#define UCX_PRINTF_BUFSIZE 256
-#else
-#pragma message("WARNING: C99 va_copy macro not supported by this platform" \
-                " - limiting ucx_*printf to 2 KiB")
-#define UCX_PRINTF_BUFSIZE 0x800
+#ifndef CX_SZMUL_BUILTIN
+#include "szmul.c"
 #endif
-
-int ucx_fprintf(void *stream, write_func wfc, const char *fmt, ...) {
-    int ret;
-    va_list ap;
-    va_start(ap, fmt);
-    ret = ucx_vfprintf(stream, wfc, fmt, ap);
-    va_end(ap);
-    return ret;
-}
-
-int ucx_vfprintf(void *stream, write_func wfc, const char *fmt, va_list ap) {
-    char buf[UCX_PRINTF_BUFSIZE];
-#ifdef va_copy
-    va_list ap2;
-    va_copy(ap2, ap);
-    int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
-    if (ret < 0) {
-        return ret;
-    } else if (ret < UCX_PRINTF_BUFSIZE) {
-        return (int)wfc(buf, 1, ret, stream);
-    } else {
-        if (ret == INT_MAX) {
-            errno = ENOMEM;
-            return -1;
-        }
-        
-        int len = ret + 1;
-        char *newbuf = (char*)malloc(len);
-        if (!newbuf) {
-            return -1;
-        }
-        
-        ret = vsnprintf(newbuf, len, fmt, ap2);
-        if (ret > 0) {
-            ret = (int)wfc(newbuf, 1, ret, stream);
-        }
-        free(newbuf);
-    }
-    return ret;
-#else
-    int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
-    if (ret < 0) {
-        return ret;
-    } else if (ret < UCX_PRINTF_BUFSIZE) {
-        return (int)wfc(buf, 1, ret, stream);
-    } else {
-        errno = ENOMEM;
-        return -1;
-    }
-#endif
-}
-
-sstr_t ucx_asprintf(UcxAllocator *allocator, const char *fmt, ...) {
-    va_list ap;
-    sstr_t ret;
-    va_start(ap, fmt);
-    ret = ucx_vasprintf(allocator, fmt, ap);
-    va_end(ap);
-    return ret;
-}
-
-sstr_t ucx_vasprintf(UcxAllocator *a, const char *fmt, va_list ap) {
-    sstr_t s;
-    s.ptr = NULL;
-    s.length = 0;
-    char buf[UCX_PRINTF_BUFSIZE];
-#ifdef va_copy
-    va_list ap2;
-    va_copy(ap2, ap);
-    int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
-    if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
-        s.ptr = (char*)almalloc(a, ret + 1);
-        if (s.ptr) {
-            s.length = (size_t)ret;
-            memcpy(s.ptr, buf, ret);
-            s.ptr[s.length] = '\0';
-        }
-    } else if (ret == INT_MAX) {
-        errno = ENOMEM;
-    } else  {
-        int len = ret + 1;
-        s.ptr = (char*)almalloc(a, len);
-        if (s.ptr) {
-            ret = vsnprintf(s.ptr, len, fmt, ap2);
-            if (ret < 0) {
-                free(s.ptr);
-                s.ptr = NULL;
-            } else {
-                s.length = (size_t)ret;
-            }
-        }
-    }
-#else
-    int ret = vsnprintf(buf, UCX_PRINTF_BUFSIZE, fmt, ap);
-    if (ret > 0 && ret < UCX_PRINTF_BUFSIZE) {
-        s.ptr = (char*)almalloc(a, ret + 1);
-        if (s.ptr) {
-            s.length = (size_t)ret;
-            memcpy(s.ptr, buf, ret);
-            s.ptr[s.length] = '\0';
-        }
-    } else {
-        errno = ENOMEM;
-    }
-#endif
-    return s;
-}