snapshot before regression test

2026-07-18 19:25:40 +08:00
commit 796222a300
2295 changed files with 206453 additions and 0 deletions
--- a/Test/SprintfTest/App/main.py
+++ b/Test/SprintfTest/App/main.py
@@ -0,0 +1,123 @@
+from stdint import *
+import t, c
+import stdio
+import stdlib
+import testcheck
+import viperlib
+
+
+# ============================================================
+# SprintfTest - viperlib.snprintf %a/%A 运行时验证
+# 预期输出对照 glibc printf("%a", ...) 行为
+# ============================================================
+@t.CExport
+def main() -> int:
+    testcheck.begin("SprintfTest: %a/%A runtime verification")
+    buf: bytes = stdlib.malloc(64)
+
+    # ---------- 默认精度（核心正确性） ----------
+    testcheck.section("default precision")
+
+    v1: t.CDouble = 1.0
+    viperlib.snprintf(buf, 64, "%a", v1)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x1p+0", "%a 1.0 -> 0x1p+0", "FAIL 1.0")
+
+    v2: t.CDouble = 2.0
+    viperlib.snprintf(buf, 64, "%a", v2)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x1p+1", "%a 2.0 -> 0x1p+1", "FAIL 2.0")
+
+    v_half: t.CDouble = 0.5
+    viperlib.snprintf(buf, 64, "%a", v_half)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x1p-1", "%a 0.5 -> 0x1p-1", "FAIL 0.5")
+
+    v3: t.CDouble = 3.0
+    viperlib.snprintf(buf, 64, "%a", v3)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x1.8p+1", "%a 3.0 -> 0x1.8p+1", "FAIL 3.0")
+
+    v_pi: t.CDouble = 3.14
+    viperlib.snprintf(buf, 64, "%a", v_pi)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x1.91eb851eb851fp+1", "%a 3.14 -> 0x1.91eb851eb851fp+1", "FAIL 3.14")
+
+    v0: t.CDouble = 0.0
+    viperlib.snprintf(buf, 64, "%a", v0)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x0p+0", "%a 0.0 -> 0x0p+0", "FAIL 0.0")
+
+    vn1: t.CDouble = -1.0
+    viperlib.snprintf(buf, 64, "%a", vn1)
+    testcheck.info(buf)
+    testcheck.check(buf == "-0x1p+0", "%a -1.0 -> -0x1p+0", "FAIL -1.0")
+
+    # ---------- 大写 %A ----------
+    testcheck.section("uppercase %A")
+    viperlib.snprintf(buf, 64, "%A", v_pi)
+    testcheck.info(buf)
+    testcheck.check(buf == "0X1.91EB851EB851FP+1", "%A 3.14 -> 0X1...P+1", "FAIL %A")
+
+    # ---------- # flag 强制小数点 ----------
+    testcheck.section("# flag")
+    viperlib.snprintf(buf, 64, "%#a", v1)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x1.p+0", "%#a 1.0 -> 0x1.p+0", "FAIL %#a")
+
+    # ---------- 显式精度 13（不裁剪） ----------
+    testcheck.section("precision 13")
+    viperlib.snprintf(buf, 64, "%.13a", v1)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x1.0000000000000p+0", "%.13a 1.0 -> 0x1.0000000000000p+0", "FAIL %.13a")
+
+    # ---------- 宽度/对齐 ----------
+    testcheck.section("width/align")
+    viperlib.snprintf(buf, 64, "%10a", v1)
+    testcheck.info(buf)
+    testcheck.check(buf == "    0x1p+0", "%10a 1.0 -> '    0x1p+0'", "FAIL %10a")
+
+    viperlib.snprintf(buf, 64, "%-10a|", v1)
+    testcheck.info(buf)
+    testcheck.check(buf == "0x1p+0    |", "%-10a 1.0 -> '0x1p+0    |'", "FAIL %-10a")
+
+    # ---------- show_sign ----------
+    testcheck.section("show_sign")
+    viperlib.snprintf(buf, 64, "%+a", v1)
+    testcheck.info(buf)
+    testcheck.check(buf == "+0x1p+0", "%+a 1.0 -> +0x1p+0", "FAIL %+a")
+
+    # ---------- inf / nan ----------
+    testcheck.section("inf/nan")
+
+    # 构造 +inf: bit pattern 0x7FF0000000000000
+    inf_bits: t.CUInt64T = 0x7FF0000000000000
+    inf_val: t.CDouble = 0.0
+    c.Load(c.Addr(inf_val), c.Addr(inf_bits))
+    viperlib.snprintf(buf, 64, "%a", inf_val)
+    testcheck.info(buf)
+    testcheck.check(buf == "inf", "%a +inf -> inf", "FAIL +inf")
+
+    # 构造 -inf: bit pattern 0xFFF0000000000000
+    ninf_bits: t.CUInt64T = 0xFFF0000000000000
+    ninf_val: t.CDouble = 0.0
+    c.Load(c.Addr(ninf_val), c.Addr(ninf_bits))
+    viperlib.snprintf(buf, 64, "%a", ninf_val)
+    testcheck.info(buf)
+    testcheck.check(buf == "-inf", "%a -inf -> -inf", "FAIL -inf")
+
+    # 构造 nan: bit pattern 0x7FF8000000000000
+    nan_bits: t.CUInt64T = 0x7FF8000000000000
+    nan_val: t.CDouble = 0.0
+    c.Load(c.Addr(nan_val), c.Addr(nan_bits))
+    viperlib.snprintf(buf, 64, "%a", nan_val)
+    testcheck.info(buf)
+    testcheck.check(buf == "nan", "%a nan -> nan", "FAIL nan")
+
+    # 大写 INF/NAN
+    viperlib.snprintf(buf, 64, "%A", inf_val)
+    testcheck.info(buf)
+    testcheck.check(buf == "INF", "%A +inf -> INF", "FAIL INF")
+
+    stdlib.free(buf)
+    return 0