1 files changed, 85 insertions, 0 deletions
diff --git a/StdLib/LibC/gdtoa/strtof.c b/StdLib/LibC/gdtoa/strtof.c
new file mode 100644
index 0000000000..44a4cb3746
--- /dev/null
+++ b/StdLib/LibC/gdtoa/strtof.c
@@ -0,0 +1,85 @@
+/* $NetBSD: strtof.c,v 1.2.14.1 2008/04/08 21:10:55 jdc Exp $ */
+
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998, 2000 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.
+
+****************************************************************/
+
+/* Please send bug reports to David M. Gay (dmg at acm dot org,
+ * with " at " changed at "@" and " dot " changed to ".").  */
+#include  <LibConfig.h>
+
+#include "namespace.h"
+#include "gdtoaimp.h"
+
+#ifdef __weak_alias
+__weak_alias(strtof, _strtof)
+#endif
+
+ float
+#ifdef KR_headers
+strtof(s, sp) CONST char *s; char **sp;
+#else
+strtof(CONST char *s, char **sp)
+#endif
+{
+  static CONST FPI fpi = { 24, 1-127-24+1,  254-127-24+1, 1, SI };
+  ULong bits[1];
+  Long expt;
+  int k;
+  union { ULong L[1]; float f; } u = { 0 };
+
+  k = strtodg(s, sp, &fpi, &expt, bits);
+  if (k == STRTOG_NoMemory) {
+    errno = ERANGE;
+    return HUGE_VALF;
+  }
+  switch(k & STRTOG_Retmask) {
+    case STRTOG_NoNumber:
+    case STRTOG_Zero:
+    u.L[0] = 0;
+    break;
+
+    case STRTOG_Normal:
+    case STRTOG_NaNbits:
+    u.L[0] = (bits[0] & 0x7fffff) | ((expt + 0x7f + 23) << 23);
+    break;
+
+    case STRTOG_Denormal:
+    u.L[0] = bits[0];
+    break;
+
+    case STRTOG_Infinite:
+    u.L[0] = 0x7f800000;
+    break;
+
+    case STRTOG_NaN:
+    u.L[0] = f_QNAN;
+    }
+  if (k & STRTOG_Neg)
+    u.L[0] |= 0x80000000L;
+  return u.f;
+  }