printf() format for C99 complex type?

[Lionel Cons]

Are there any printf() formats defined for the C99 complex type?

Lionel

[Fred J. Tydeman]

Post by Lionel Cons
Are there any printf() formats defined for the C99 complex type?

No. Instead, do: printf("(%g+I*%g)", creal(z), cimag(z));


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Fred J. Tydeman Tydeman Consulting
***@tybor.com Testing, numerics, programming
[phone] Vice-chair of PL22.11 (ANSI "C")
Sample C99+FPCE tests: http://www.tybor.com
Savers sleep well, investors eat well, spenders work forever.

[Lionel Cons]

Post by Fred J. Tydeman

Post by Lionel Cons
Are there any printf() formats defined for the C99 complex type?

No. Instead, do: printf("(%g+I*%g)", creal(z), cimag(z));

Do any libc versions or operating systems provide extensions to print
this in one go? The problem I'm trying to solve is the lack of way to
distinguish between a plain floating-point number and a complex
number. strtod() will consume only the floating-point part, and then?

Lionel

[Fred J. Tydeman]

Post by Lionel Cons

Post by Fred J. Tydeman

Post by Lionel Cons
Are there any printf() formats defined for the C99 complex type?

No. Instead, do: printf("(%g+I*%g)", creal(z), cimag(z));

Do any libc versions or operating systems provide extensions to print
this in one go?

Not as far as I know.

Post by Lionel Cons
The problem I'm trying to solve is the lack of way to
distinguish between a plain floating-point number and a complex
number. strtod() will consume only the floating-point part, and then?

Since a complex number is a pair of floating-point numbers, you could
use strtod() twice to read both numbers and then create you own
complex number from the pair.

---
Fred J. Tydeman Tydeman Consulting
***@tybor.com Testing, numerics, programming
[phone] Vice-chair of PL22.11 (ANSI "C")
Sample C99+FPCE tests: http://www.tybor.com
Savers sleep well, investors eat well, spenders work forever.