coords.c File Reference

Telling a real fix from the phone's way of saying it has none. More...

#include "wire/coords.h"

Functions
static bool	has_digit (const char *s)
	Whether a string carries at least one digit.
bool	coords_look_real (const char *lat, const char *lon)
	Whether a pair of coordinates is a place rather than the phone shrugging.

Detailed Description

Telling a real fix from the phone's way of saying it has none.

Function Documentation

has_digit()

bool has_digit ( const char * s )

static

Whether a string carries at least one digit.

A digit is the whole tell, so this walks for one rather than calling strpbrk. The tree has one other caller of that family and it drags a few hundred bytes of libc in behind it.

Parameters

s	The string to check, or NULL.

Returns

Whether it holds a digit.