+/**
+ * Minimum value representable by the type.
+ */
+double
+lp_const_min(struct lp_type type)
+{
+ unsigned bits;
+
+ if(!type.sign)
+ return 0.0;
+
+ if(type.norm)
+ return -1.0;
+
+ if (type.floating) {
+ switch(type.width) {
+ case 32:
+ return -FLT_MAX;
+ case 64:
+ return -DBL_MAX;
+ default:
+ assert(0);
+ return 0.0;
+ }
+ }
+
+ if(type.fixed)
+ /* FIXME: consider the fractional bits? */
+ bits = type.width / 2 - 1;
+ else
+ bits = type.width - 1;
+
+ return (double)-((long long)1 << bits);
+}
+
+
+/**
+ * Maximum value representable by the type.
+ */
+double
+lp_const_max(struct lp_type type)
+{
+ unsigned bits;
+
+ if(type.norm)
+ return 1.0;
+
+ if (type.floating) {
+ switch(type.width) {
+ case 32:
+ return FLT_MAX;
+ case 64:
+ return DBL_MAX;
+ default:
+ assert(0);
+ return 0.0;
+ }
+ }
+
+ if(type.fixed)
+ bits = type.width / 2;
+ else
+ bits = type.width;
+
+ if(type.sign)
+ bits -= 1;
+
+ return (double)(((unsigned long long)1 << bits) - 1);
+}
+
+
+double
+lp_const_eps(struct lp_type type)
+{
+ if (type.floating) {
+ switch(type.width) {
+ case 32:
+ return FLT_EPSILON;
+ case 64:
+ return DBL_EPSILON;
+ default:
+ assert(0);
+ return 0.0;
+ }
+ }
+ else {
+ double scale = lp_const_scale(type);
+ return 1.0/scale;
+ }
+}
+
+