diff --git a/src/proto/float.pro b/src/proto/float.pro
new file mode 100644
index 0000000..e14ce24
--- /dev/null
+++ b/src/proto/float.pro
@@ -0,0 +1,28 @@
+/* math.c */
+int string2float(char_u *text, float_T *value);
+void f_abs(typval_T *argvars, typval_T *rettv);
+void f_acos(typval_T *argvars, typval_T *rettv);
+void f_asin(typval_T *argvars, typval_T *rettv);
+void f_atan(typval_T *argvars, typval_T *rettv);
+void f_atan2(typval_T *argvars, typval_T *rettv);
+void f_ceil(typval_T *argvars, typval_T *rettv);
+void f_cos(typval_T *argvars, typval_T *rettv);
+void f_cosh(typval_T *argvars, typval_T *rettv);
+void f_exp(typval_T *argvars, typval_T *rettv);
+void f_float2nr(typval_T *argvars, typval_T *rettv);
+void f_floor(typval_T *argvars, typval_T *rettv);
+void f_fmod(typval_T *argvars, typval_T *rettv);
+void f_isinf(typval_T *argvars, typval_T *rettv);
+void f_isnan(typval_T *argvars, typval_T *rettv);
+void f_log(typval_T *argvars, typval_T *rettv);
+void f_log10(typval_T *argvars, typval_T *rettv);
+void f_pow(typval_T *argvars, typval_T *rettv);
+void f_round(typval_T *argvars, typval_T *rettv);
+void f_sin(typval_T *argvars, typval_T *rettv);
+void f_sinh(typval_T *argvars, typval_T *rettv);
+void f_sqrt(typval_T *argvars, typval_T *rettv);
+void f_str2float(typval_T *argvars, typval_T *rettv);
+void f_tan(typval_T *argvars, typval_T *rettv);
+void f_tanh(typval_T *argvars, typval_T *rettv);
+void f_trunc(typval_T *argvars, typval_T *rettv);
+/* vim: set ft=c : */