Add remaining GetFloatBounds variants

Author: TimWolla

ext/random/random.stub.php

@@ -116,6 +116,8 @@ public function generate(): string {}
     enum GetFloatBounds {
         case ClosedOpen;
         case ClosedClosed;
+        case OpenClosed;
+        case OpenOpen;
     }
 }
 

ext/random/random_arginfo.h

@@ -187,6 +187,32 @@ static double getFloat_closed_closed(const php_random_algo *algo, php_random_sta
 	}
 }
 
+static double getFloat_open_closed(const php_random_algo *algo, php_random_status *status, double min, double max)
+{
+	double g = getFloat_gamma(min, max);
+	uint64_t hi = getFloat_ceilint(min, max, g);
+	uint64_t k = algo->range(status, 0, hi - 1);
+
+	if (fabs(min) <= fabs(max)) {
+		return max - k * g;
+	} else {
+		return k == (hi - 1) ? max : min + (k + 1) * g;
+	}
+}
+
+static double getFloat_open_open(const php_random_algo *algo, php_random_status *status, double min, double max)
+{
+	double g = getFloat_gamma(min, max);
+	uint64_t hi = getFloat_ceilint(min, max, g);
+	uint64_t k = algo->range(status, 1, hi - 1);
+
+	if (fabs(min) <= fabs(max)) {
+		return max - k * g;
+	} else {
+		return min + k * g;
+	}
+}
+
 /* {{{ Generates a random float within [min, max).
  *
  * The algorithm used is the γ-section algorithm as published in:
@@ -230,6 +256,12 @@ PHP_METHOD(Random_Randomizer, getFloat)
 	if (zend_string_equals_literal(bounds_name, "ClosedClosed")) {
 		RETURN_DOUBLE(getFloat_closed_closed(randomizer->algo, randomizer->status, min, max));
 	}
+	if (zend_string_equals_literal(bounds_name, "OpenClosed")) {
+		RETURN_DOUBLE(getFloat_open_closed(randomizer->algo, randomizer->status, min, max));
+	}
+	if (zend_string_equals_literal(bounds_name, "OpenOpen")) {
+		RETURN_DOUBLE(getFloat_open_open(randomizer->algo, randomizer->status, min, max));
+	}
 	ZEND_UNREACHABLE();
 }
 /* }}} */