Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30558-88b7dc3357) Lines: 1467 1530 95.9 % Date: 2025-11-27 09:21:46 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22709
polrootsbound_i	27291
polrootsbound	27298
RgX_normalize1	35899
ZX_realroots_irred	48655
realroots	50627
ZX_sturm_irred	116775
ZX_sturm_i	123170
split_pols	166720
polsolve	166721
splitcauchy	166728
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	267058
QX_complex_roots	296416
_gen_zero	326161
fix_roots1	398471
conformal_mapping	467936
split_1	467936
split_0_1	468300
split_0_2	468300
logradius	493984
split_2	493985
update_radius	493987
optimize_split	493988
parameters	493988
split_fromU	493988
split_0	494350
refine_F	502368
dft	502377
all_roots	536118
clean_roots	536166
fix_roots	537227
a_posteriori_errors	537228
mygprec_special	537229
logmodulus	606768
logpre_modulus	606769
abs_update_r	778662
ind_maxlog2	902682
isexactscalar	931714
isreal	961922
initdft	996364
dual_modulus	1012482
usp	1126004
ZX_sturmpart	1128234
check_ab	1178860
tocomplex	1213972
isvalidcoeff	1230229
ZX_Uspensky	1313878
conformal_basecase	1403922
conformal_pol	1404046
fujiwara_bound_real	1406906
split_complete	1525922
homothetie	1610132
append_clone	1614195
logmin_modulus	1614844
root_error	1912566
mygprecrc_special	2179208
ZX_rescale2prim	2233673
cmp_complex_appr	2238584
fujiwara_bound	2271776
checkbound	2354851
refine_H	2460545
scalepol	4289481
mygprec_absolute	4340040
_mp_mul	4374590
logmax_modulus	4451021
bkeval_single_power	5235681
splitpoleval	5235847
newton_polygon	5507332
X2XP1	5990121
_mp_sqr	6298433
dblexp	6549214
quicktofp	6978913
RgX_gtofp_bit	7031714
abs_update	8005370
mydbllogr	9546837
homothetie2n	9957989
_gen_nored	11203216
eval_rel_pol	13138652
fft	14159855
_gen_one	14473552
ZX_to_ZiX	16458305
pol_to_gaussint	17589687
_mp_add	24662527
_mp_cmul	34768380
myshiftrc	35507890
homothetie_gauss	36498910
lower_bound	40958408
findpower	40959304
graeffe	49508967
mydbllog2r	56183642
mygprec	63758999
ZiX_sqr	99037275
myshiftic	135827637
mygprecrc	215199659
mydbllog2i	226454051
dbllog2	302125556

Generated by: LCOV version 1.16