nasmlib: break up nasmlib.c into logical components

nasmlib.c had basically turned into a garbage bin of various functions
with very little in common.  Break it up into logical components for
isolation and manageability.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/nasmlib/bsi.c b/nasmlib/bsi.c
new file mode 100644
index 00000000..a811e45e
--- /dev/null
+++ b/nasmlib/bsi.c
@@ -0,0 +1,77 @@
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 1996-2016 The NASM Authors - All Rights Reserved
+ *   See the file AUTHORS included with the NASM distribution for
+ *   the specific copyright holders.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following
+ *   conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above
+ *     copyright notice, this list of conditions and the following
+ *     disclaimer in the documentation and/or other materials provided
+ *     with the distribution.
+ *     
+ *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * nasmlib.c	library routines for the Netwide Assembler
+ */
+
+#include "compiler.h"
+
+#include <string.h>
+
+#include "nasmlib.h"
+
+/*
+ * Binary search.
+ */
+int bsi(const char *string, const char **array, int size)
+{
+    int i = -1, j = size;       /* always, i < index < j */
+    while (j - i >= 2) {
+        int k = (i + j) / 2;
+        int l = strcmp(string, array[k]);
+        if (l < 0)              /* it's in the first half */
+            j = k;
+        else if (l > 0)         /* it's in the second half */
+            i = k;
+        else                    /* we've got it :) */
+            return k;
+    }
+    return -1;                  /* we haven't got it :( */
+}
+
+int bsii(const char *string, const char **array, int size)
+{
+    int i = -1, j = size;       /* always, i < index < j */
+    while (j - i >= 2) {
+        int k = (i + j) / 2;
+        int l = nasm_stricmp(string, array[k]);
+        if (l < 0)              /* it's in the first half */
+            j = k;
+        else if (l > 0)         /* it's in the second half */
+            i = k;
+        else                    /* we've got it :) */
+            return k;
+    }
+    return -1;                  /* we haven't got it :( */
+}