36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/* clang-format off */
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//===-- 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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STATIC_YOINK("huge_compiler_rt_license");
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#define DOUBLE_PRECISION
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#include "third_party/compiler_rt/fp_lib.inc"
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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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#if defined(__ARM_EABI__)
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#if defined(COMPILER_RT_ARMHF_TARGET)
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AEABI_RTABI fp_t __aeabi_dsub(fp_t a, fp_t b) {
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return __subdf3(a, b);
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}
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#else
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AEABI_RTABI fp_t __aeabi_dsub(fp_t a, fp_t b) COMPILER_RT_ALIAS(__subdf3);
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#endif
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#endif
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