details: http://hg.nginx.org/njs/rev/8722dc4bdeb4
branches:
changeset: 240:8722dc4bdeb4
user: Valentin Bartenev <vbart@nginx.com>
date: Sun Nov 06 16:03:03 2016 +0300
description:
Various Number constants.
diffstat:
njs/njs_number.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 60 insertions(+), 0 deletions(-)
diffs (77 lines):
diff -r 53d2024f6ca3 -r 8722dc4bdeb4 njs/njs_number.c
--- a/njs/njs_number.c Fri Nov 04 23:45:35 2016 +0300
+++ b/njs/njs_number.c Sun Nov 06 16:03:03 2016 +0300
@@ -22,6 +22,15 @@
#include <njs_function.h>
#include <string.h>
#include <stdio.h>
+#include <float.h>
+
+
+/*
+ * 2^53 - 1 is the largest integer n such that n and n + 1
+ * as well as -n and -n - 1 are all exactly representable
+ * in the IEEE-754 format.
+ */
+#define NJS_MAX_SAFE_INTEGER ((1LL << 53) - 1)
static njs_ret_t njs_number_to_string_radix(njs_vm_t *vm, njs_value_t *string,
@@ -273,6 +282,57 @@ static const njs_object_prop_t njs_numb
.name = njs_string("prototype"),
.value = njs_native_getter(njs_object_prototype_create),
},
+
+ /* ES6. */
+ {
+ .type = NJS_PROPERTY,
+ .name = njs_string("EPSILON"),
+ .value = njs_value(NJS_NUMBER, 1, DBL_EPSILON),
+ },
+
+ /* ES6. */
+ {
+ .type = NJS_PROPERTY,
+ .name = njs_long_string("MAX_SAFE_INTEGER"),
+ .value = njs_value(NJS_NUMBER, 1, NJS_MAX_SAFE_INTEGER),
+ },
+
+ /* ES6. */
+ {
+ .type = NJS_PROPERTY,
+ .name = njs_long_string("MIN_SAFE_INTEGER"),
+ .value = njs_value(NJS_NUMBER, 1, -NJS_MAX_SAFE_INTEGER),
+ },
+
+ {
+ .type = NJS_PROPERTY,
+ .name = njs_string("MAX_VALUE"),
+ .value = njs_value(NJS_NUMBER, 1, DBL_MAX),
+ },
+
+ {
+ .type = NJS_PROPERTY,
+ .name = njs_string("MIN_VALUE"),
+ .value = njs_value(NJS_NUMBER, 1, DBL_MIN),
+ },
+
+ {
+ .type = NJS_PROPERTY,
+ .name = njs_string("NaN"),
+ .value = njs_value(NJS_NUMBER, 0, NAN),
+ },
+
+ {
+ .type = NJS_PROPERTY,
+ .name = njs_long_string("POSITIVE_INFINITY"),
+ .value = njs_value(NJS_NUMBER, 1, INFINITY),
+ },
+
+ {
+ .type = NJS_PROPERTY,
+ .name = njs_long_string("NEGATIVE_INFINITY"),
+ .value = njs_value(NJS_NUMBER, 1, -INFINITY),
+ },
};
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