Fortran Wiki
iso_c_binding

Description

iso_c_binding is a standard intrinsic module which defines named constants, types, and procedures for C interoperability.

The following intrinsic procedures are provided by the module; their definition can be found in the section Intrinsic Procedures of this manual.

The iso_c_binding module also provides the following named constants of type default integer, which can be used as kind type parameters.

Fortran Type	Named constant	C type	Note
`integer`	`c_int`	`int`
`integer`	`c_short`	`short int`
`integer`	`c_long`	`long int`
`integer`	`c_long_long`	`long long int`
`integer`	`c_signed_char`	`signed char`/`unsigned char`
`integer`	`c_size_t`	`size_t`
`integer`	`c_int8_t`	`int8_t`
`integer`	`c_int16_t`	`int16_t`
`integer`	`c_int32_t`	`int32_t`
`integer`	`c_int64_t`	`int64_t`
`integer`	`c_int_least8_t`	`int_least8_t`
`integer`	`c_int_least16_t`	`int_least16_t`
`integer`	`c_int_least32_t`	`int_least32_t`
`integer`	`c_int_least64_t`	`int_least64_t`
`integer`	`c_int_fast8_t`	`int_fast8_t`
`integer`	`c_int_fast16_t`	`int_fast16_t`
`integer`	`c_int_fast32_t`	`int_fast32_t`
`integer`	`c_int_fast64_t`	`int_fast64_t`
`integer`	`c_intmax_t`	`intmax_t`
`integer`	`c_intptr_t`	`intptr_t`
`integer`	`c_ptrdiff_t`	`intptr_t`	TS 29113
`real`	`c_float`	`float`
`real`	`c_double`	`double`
`real`	`c_long_double`	`long double`
`complex`	`c_float_complex`	`float _Complex`
`complex`	`c_double_complex`	`double _Complex`
`complex`	`c_long_double_complex`	`long double _Complex`
`logical`	`c_bool`	`_Bool`
`character`	`c_char`	`char`

Additionally, the following parameters of type character(kind=c_char) are defined.

Moreover, the following two named constants are defined:

Name	Type
c_null_ptr	c_ptr
c_null_funptr	c_funptr

Both are equivalent to the value NULL in C.

Revised on March 2, 2023 16:43:18 by vmagnin (86.67.213.94) (4132 characters / 1.0 pages)