Implement rounding mode for cvt.w.fmt instructions
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@ -137,12 +137,43 @@ static inline gpr do_lwl(uint8_t* rdram, gpr offset, gpr reg) {
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#define TRUNC_L_D(val) \
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((int64_t)(val))
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// TODO rounding mode
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#define DEFAULT_ROUNDING_MODE 0
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static inline int32_t do_cvt_w_s(float val, unsigned int rounding_mode) {
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switch (rounding_mode) {
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case 0: // round to nearest value
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return (int32_t)lroundf(val);
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case 1: // round to zero (truncate)
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return (int32_t)val;
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case 2: // round to positive infinity (ceil)
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return (int32_t)ceilf(val);
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case 3: // round to negative infinity (floor)
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return (int32_t)floorf(val);
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}
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assert(0);
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return 0;
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}
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#define CVT_W_S(val) \
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((int32_t)(val))
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do_cvt_w_s(val, rounding_mode)
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static inline int32_t do_cvt_w_d(double val, unsigned int rounding_mode) {
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switch (rounding_mode) {
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case 0: // round to nearest value
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return (int32_t)lround(val);
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case 1: // round to zero (truncate)
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return (int32_t)val;
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case 2: // round to positive infinity (ceil)
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return (int32_t)ceil(val);
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case 3: // round to negative infinity (floor)
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return (int32_t)floor(val);
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}
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assert(0);
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return 0;
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}
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#define CVT_W_D(val) \
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((int32_t)(val))
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do_cvt_w_d(val, rounding_mode)
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#define NAN_CHECK(val) \
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assert(val == val)
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