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target/m68k: add fmod/frem

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Using a local m68k floatx80_mod()
[copied from previous:
Written by Andreas Grabher for Previous, NeXT Computer Emulator.]

The quotient byte of the FPSR is updated with
the result of the operation.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180224201802.911-3-laurent@vivier.eu>
This commit is contained in:
Laurent Vivier 2018-02-24 21:18:00 +01:00
parent 88857aca93
commit 591596b77a
7 changed files with 176 additions and 2 deletions
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1
target/m68k/cpu.h
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@ -427,6 +427,7 @@ typedef enum {
/* Quotient */
#define FPSR_QT_MASK 0x00ff0000
#define FPSR_QT_SHIFT 16
/* Floating-Point Control Register */
/* Rounding mode */