diff options
Diffstat (limited to 'erts/emulator/sys/win32/sys_float.c')
| -rw-r--r-- | erts/emulator/sys/win32/sys_float.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/erts/emulator/sys/win32/sys_float.c b/erts/emulator/sys/win32/sys_float.c index 6558ad2d99..fb1ffc3089 100644 --- a/erts/emulator/sys/win32/sys_float.c +++ b/erts/emulator/sys/win32/sys_float.c @@ -1,7 +1,7 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 1997-2011. All Rights Reserved. + * Copyright Ericsson AB 1997-2013. All Rights Reserved. * * The contents of this file are subject to the Erlang Public License, * Version 1.1, (the "License"); you may not use this file except in @@ -114,22 +114,23 @@ sys_chars_to_double(char *buf, double *fp) /* ** Convert a double to ascii format 0.dddde[+|-]ddd -** return number of characters converted +** return number of characters converted or -1 if error. */ int -sys_double_to_chars(double fp, char *buf) +sys_double_to_chars_ext(double fp, char *buffer, size_t buffer_size, size_t decimals) { - char *s = buf; - - (void) sprintf(buf, "%.20e", fp); + char *s = buffer; + + if (erts_snprintf(buffer, buffer_size, "%.*e", decimals, fp) >= buffer_size) + return -1; /* Search upto decimal point */ if (*s == '+' || *s == '-') s++; while (isdigit(*s)) s++; if (*s == ',') *s++ = '.'; /* Replace ',' with '.' */ /* Scan to end of string */ while (*s) s++; - return s-buf; /* i.e strlen(buf) */ + return s-buffer; /* i.e strlen(buffer) */ } int |