From 1ad4106b84adb448bd95eeb651d8c3dad486e5c4 Mon Sep 17 00:00:00 2001
From: Timo Kreuzer <timo.kreuzer@reactos.org>
Date: Sat, 18 Jun 2022 10:19:18 +0200
Subject: [PATCH] [CRT] Add basic version of handle_error

---
 sdk/lib/crt/math/libm_sse2/_handle_error.c | 72 ++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 sdk/lib/crt/math/libm_sse2/_handle_error.c

diff --git a/sdk/lib/crt/math/libm_sse2/_handle_error.c b/sdk/lib/crt/math/libm_sse2/_handle_error.c
new file mode 100644
index 00000000000..4d679a292ea
--- /dev/null
+++ b/sdk/lib/crt/math/libm_sse2/_handle_error.c
@@ -0,0 +1,72 @@
+/*
+ * PROJECT:     ReactOS CRT library
+ * LICENSE:     MIT (https://spdx.org/licenses/MIT)
+ * PURPOSE:     Implementation of _handle_error / _handle_errorf for libm
+ * COPYRIGHT:   Copyright 2022 Timo Kreuzer <timo.kreuzer@reactos.org>
+ */
+
+#include <math.h>
+
+int
+__cdecl
+_invoke_matherr(
+    int type,
+    char* name,
+    double arg1,
+    double arg2,
+    double retval);
+
+/*!
+ * @brief Handles an error condition. 
+ * @param fname - The name of the function that caused the error.
+ * @param opcode - Opcode of the function that cause the error (see OP_* consants in fpieee.h).
+ * @param value - The value to be returned, encoded as uint64_t.
+ * @param type - The type of error (see _DOMAIN, ... in math.h)
+ * @param flags - Exception flags (see AMD_F_* constants).
+ * @param error - Specifies the CRT error code (EDOM, ...).
+ * @param arg1 - First parameter to the function that cause the error.
+ * @param arg2 - Second parameter to the function that cause the error.
+ * @param nargs - Number of parameters to the function that cause the error.
+ * @return The value to be returned.
+ */
+double
+__cdecl
+_handle_error(
+    char *fname,
+    int opcode,
+    unsigned long long value,
+    int type,
+    int flags,
+    int error,
+    double arg1,
+    double arg2,
+    int nargs)
+{
+    float retval = *(double*)&value;
+
+    _invoke_matherr(type, fname, arg1, arg2, retval);
+
+    return retval;
+}
+
+
+
+float
+__cdecl
+_handle_errorf(
+    char *fname,
+    int opcode,
+    unsigned long long value,
+    int type,
+    int flags,
+    int error,
+    float arg1,
+    float arg2,
+    int nargs)
+{
+    float retval = *(float*)&value;
+
+    _invoke_matherr(type, fname, arg1, arg2, retval);
+
+    return retval;
+}