Mixing glibc and standard C data types

["Oleg N. Mayboroda" <onm sparc spb su>]

Hello !
As far as I understand gtk+ is based on glibc. So, glibc data types
(gint, gfloat etc. ...) should be used.
But in some functions you can find following situation:
void  gtk_curve_set_vector  (GtkCurve *curve, int veclen, gfloat
vector[]);

^^^           ^^^^^
There are quite many such functions where glibc and standard basic data
types is mixed.
Is there any reason for mixing glibc and standard C types?

Thanks.
Oleg