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# quick-n-dirty way to print out floats in hex
# https://www.exploringbinary.com/hexadecimal-floating-point-constants
# example:
# 0.5 = 0x3f000000 = 0011| 1111 | 0000 | 0000 | 0000 | 0000 | 0000 | 0000
# = 0 | 01111110 | 00000000000000000000000
# + exponent mantissa
# = 0 | 00000000000000000000000 | 01111110
# mantissa exponent
# = 0 | 000000000000000000000000 | 01111110
# zero-pad mantissa exponent
# = +1.000000 P -01
fn test-print-float-hex-normal {
var screen-on-stack: screen
var screen/esi: (addr screen) <- address screen-on-stack
initialize-screen screen, 5, 0x20 # 32 columns should be more than enough
# 0.5
var half/xmm0: float <- rational 1, 2
print-float-hex screen, half
check-screen-row screen, 1, "1.000000P-01 ", "F - test-print-float-hex-normal 0.5"
# 0.25
clear-screen screen
var quarter/xmm0: float <- rational 1, 4
print-float-hex screen, quarter
check-screen-row screen, 1, "1.000000P-02 ", "F - test-print-float-hex-normal 0.25"
# 0.75
clear-screen screen
var three-quarters/xmm0: float <- rational 3, 4
print-float-hex screen, three-quarters
check-screen-row screen, 1
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