- Aide de Scilab
- Chaînes de caractères
- asciimat
- eval
- evstr
- isnum
- string
- ascii
- blanks
- char
- convstr
- emptystr
- grep
- isalphanum
- isascii
- isdigit
- isletter
- justify
- length
- part
- regexp
- sci2exp
- strcat
- strchr
- strcmp
- strcmpi
- strcspn
- strindex
- strings
- stripblanks
- strncpy
- strrchr
- strrev
- strsplit
- strspn
- strstr
- strsubst
- strtod
- strtok
- tokenpos
- tokens
Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
See the recommended documentation of this function
strtod
convert string to double
Calling Sequence
d = strtod(str [,decimalseparator]) [d, endstr] = strtod(str [,decimalseparator])
Arguments
- str
a character string or matrix of character strings.
- decimalseparator
the decimal separator chosen: "." (by default) or ",".
- d
a real or matrix of reals.
- endstr
a character string or matrix of character strings (next character in
str
after the numerical value).
Description
[d, endstr] = strtod(str)
parses strings
str
interpreting its content as a floating point
number and returns its value as a real. If str
does not contain any numerical value then d
equals Nan
.
Remarks
This function is based on the strtod C function which causes different behaviors on Windows and Linux. In fact, on Windows, it is possible to use d or D for exponents, but it is not possible to use hexadecimal numbers.
Note that
strtod("%inf")
returnsNan
.
Examples
strtod('123.556This is a sample real') strtod('123,556This is a sample real', ",") [d,endstr] = strtod('123.556This is a sample real') strtod(['123.556This is a sample real','888.666 here']) [d,endstr] =strtod(['123.556This is a sample real','888.666 here']) [d,endstr] =strtod(['123.556This is a sample real','888,666 here'], ",")
History
Version | Description |
5.5.0 | New optional input: decimalseparator (SEP 97). |
5.4.1 | If str does not contain any numerical value then d equals Nan instead of 0 in previous versions. |
Report an issue | ||
<< strsubst | Chaînes de caractères | strtok >> |