b5226576ea
Summary: Implement the missing ARM EABI functions _aeabi_frsub and __aeabi_drsub. Reviewers: rengolin, compnerd Subscribers: pirama, srhines, danalbert, aemerson, llvm-commits Differential Revision: http://reviews.llvm.org/D12088 llvm-svn: 245321
26 lines
804 B
C
26 lines
804 B
C
//===-- lib/adddf3.c - Double-precision subtraction ---------------*- C -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements double-precision soft-float subtraction with the
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// IEEE-754 default rounding (to nearest, ties to even).
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//
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//===----------------------------------------------------------------------===//
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#define DOUBLE_PRECISION
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#include "fp_lib.h"
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ARM_EABI_FNALIAS(dsub, subdf3)
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// Subtraction; flip the sign bit of b and add.
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COMPILER_RT_ABI fp_t
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__subdf3(fp_t a, fp_t b) {
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return __adddf3(a, fromRep(toRep(b) ^ signBit));
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}
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