| mpfr_libmpfr_vsnprintf Method |
Form a null-terminated string corresponding to the optional arguments under the control of the template string template, and print it in buf.
Namespace: Math.Mpfr.Native
Assembly: Math.Mpfr.Native (in Math.Mpfr.Native.dll) Version: 1.0.0.0 (1.0.0.0)
Syntaxpublic static int mpfr_vsnprintf( char_ptr buf, size_t n, string template, params Object[] arguments )
Parameters
- buf
- Type: Math.Gmp.Nativechar_ptr
The output buffer. - n
- Type: Math.Gmp.Nativesize_t
The number of characters written to the output buffer. - template
- Type: SystemString
Format string. See Formatted Output Functions. - arguments
- Type: SystemObject
Arguments.
Return Value
Type: Int32Return the number of characters that would have been written had n been sufficiently large, not counting the terminating null character, or a negative value if an error occurred.
RemarksIf n is zero, nothing is written and buf may be a null pointer, otherwise, the n - 1 first characters are written in buf and the n-th is a null character.
Exampleschar_ptr str = new char_ptr("........................................."); mpfr_t r = "12345e6"; Assert.IsTrue(mpfr_lib.mpfr_vsnprintf(str, 41, "%Re", r) == 10); Assert.IsTrue(str.ToString() == "1.2345e+10"); Assert.IsTrue(mpfr_lib.mpfr_vsnprintf(str, 41, "%Rf", r) == 18); Assert.IsTrue(str.ToString() == "12345000000.000000"); Assert.IsTrue(mpfr_lib.mpfr_vsnprintf(str, 41, "%Rg", r) == 10); Assert.IsTrue(str.ToString() == "1.2345e+10"); Assert.IsTrue(mpfr_lib.mpfr_vsnprintf(str, 41, "%Ra", r) == 15); Assert.IsTrue(str.ToString() == "0x2.dfd1c04p+32"); mpfr_lib.mpfr_clear(r); gmp_lib.free(str);
See Also