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66 lines
2.2 KiB
66 lines
2.2 KiB
From c480c25cf9265fe8e90c2c26d65c8a2fa174b0ea Mon Sep 17 00:00:00 2001
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From: Yousong Zhou <yszhou4tech@gmail.com>
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Date: Sat, 24 Feb 2018 13:45:25 +0800
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Subject: [PATCH 3/4] disas: fix compilation failure when isnan is a macro
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---
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disas/libvixl/vixl/utils.h | 16 +++++++++++-----
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1 file changed, 11 insertions(+), 5 deletions(-)
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diff --git a/disas/libvixl/vixl/utils.h b/disas/libvixl/vixl/utils.h
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index 5ab134e240..df30663df8 100644
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--- a/disas/libvixl/vixl/utils.h
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+++ b/disas/libvixl/vixl/utils.h
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@@ -118,11 +118,17 @@ double double_pack(uint64_t sign, uint64_t exp, uint64_t mantissa);
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// An fpclassify() function for 16-bit half-precision floats.
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int float16classify(float16 value);
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+#ifdef isnan
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+#define isnan_ isnan
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+#else
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+#define isnan_ std::isnan
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+#endif
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+
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// NaN tests.
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inline bool IsSignallingNaN(double num) {
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const uint64_t kFP64QuietNaNMask = UINT64_C(0x0008000000000000);
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uint64_t raw = double_to_rawbits(num);
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- if (std::isnan(num) && ((raw & kFP64QuietNaNMask) == 0)) {
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+ if (isnan_(num) && ((raw & kFP64QuietNaNMask) == 0)) {
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return true;
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}
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return false;
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@@ -132,7 +138,7 @@ inline bool IsSignallingNaN(double num) {
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inline bool IsSignallingNaN(float num) {
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const uint32_t kFP32QuietNaNMask = 0x00400000;
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uint32_t raw = float_to_rawbits(num);
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- if (std::isnan(num) && ((raw & kFP32QuietNaNMask) == 0)) {
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+ if (isnan_(num) && ((raw & kFP32QuietNaNMask) == 0)) {
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return true;
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}
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return false;
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@@ -148,21 +154,21 @@ inline bool IsSignallingNaN(float16 num) {
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template <typename T>
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inline bool IsQuietNaN(T num) {
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- return std::isnan(num) && !IsSignallingNaN(num);
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+ return isnan_(num) && !IsSignallingNaN(num);
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}
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// Convert the NaN in 'num' to a quiet NaN.
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inline double ToQuietNaN(double num) {
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const uint64_t kFP64QuietNaNMask = UINT64_C(0x0008000000000000);
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- VIXL_ASSERT(std::isnan(num));
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+ VIXL_ASSERT(isnan_(num));
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return rawbits_to_double(double_to_rawbits(num) | kFP64QuietNaNMask);
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}
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inline float ToQuietNaN(float num) {
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const uint32_t kFP32QuietNaNMask = 0x00400000;
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- VIXL_ASSERT(std::isnan(num));
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+ VIXL_ASSERT(isnan_(num));
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return rawbits_to_float(float_to_rawbits(num) | kFP32QuietNaNMask);
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}
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