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21 lines
471 B
C
21 lines
471 B
C
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#include "pspmath.h"
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float vfpu_tanhf(float x) {
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float result;
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//y = exp(x+x);
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//return (y-1)/(y+1);
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__asm__ volatile (
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"mtv %0, S000\n"
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"vadd.s S000, S000, S000\n"
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"vcst.s S001, VFPU_LN2\n"
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"vrcp.s S001, S001\n"
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"vmul.s S000, S000, S001\n"
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"vexp2.s S000, S000\n"
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"vone.s S001\n"
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"vbfy1.p C002, C000\n"
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"vdiv.s S000, S003, S002\n"
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"mfv %0, S000\n"
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: "=r"(result): "r"(x));
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return result;
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}
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