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 30480-572da319a6) Lines: 1468 1530 95.9 % Date: 2025-08-27 09:24:05 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	5383
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15275
_sqrtnr	22710
polrootsbound_i	27293
polrootsbound	27300
RgX_normalize1	35887
ZX_realroots_irred	48633
realroots	50627
ZX_sturm_irred	116768
ZX_sturm_i	123163
split_pols	166674
polsolve	166676
splitcauchy	166681
solve_exact_pol	231145
cleanroots	231749
isexactpol	239739
roots_com	239739
roots_aux	239767
checkvalidpol	267046
QX_complex_roots	296375
_gen_zero	326160
fix_roots1	398402
conformal_mapping	467903
split_1	467904
split_0_1	468227
split_0_2	468227
logradius	493955
update_radius	493956
parameters	493957
split_2	493957
split_fromU	493957
optimize_split	493958
split_0	494281
refine_F	502341
dft	502348
all_roots	536072
clean_roots	536116
a_posteriori_errors	537115
fix_roots	537115
mygprec_special	537118
logpre_modulus	606741
logmodulus	606743
abs_update_r	778660
ind_maxlog2	902628
isexactscalar	931700
isreal	961861
initdft	996303
dual_modulus	1012414
usp	1125953
ZX_sturmpart	1128177
check_ab	1178804
tocomplex	1213846
isvalidcoeff	1230095
ZX_Uspensky	1313803
conformal_basecase	1403830
conformal_pol	1403949
fujiwara_bound_real	1406814
split_complete	1525675
homothetie	1610036
append_clone	1613948
logmin_modulus	1614785
root_error	1912294
mygprecrc_special	2178426
ZX_rescale2prim	2233630
cmp_complex_appr	2238457
fujiwara_bound	2271584
checkbound	2354738
refine_H	2460306
scalepol	4289196
mygprec_absolute	4339200
_mp_mul	4373775
logmax_modulus	4450808
splitpoleval	5234201
bkeval_single_power	5234671
newton_polygon	5507118
X2XP1	5990040
_mp_sqr	6297392
dblexp	6548822
quicktofp	6978627
RgX_gtofp_bit	7031308
abs_update	8004553
mydbllogr	9545780
homothetie2n	9957568
_gen_nored	11198147
eval_rel_pol	13137937
fft	14159019
_gen_one	14470380
ZX_to_ZiX	16455633
pol_to_gaussint	17588723
_mp_add	24660096
_mp_cmul	34760679
myshiftrc	35507545
homothetie_gauss	36501612
lower_bound	40957106
findpower	40958373
graeffe	49508886
mydbllog2r	56754705
mygprec	63755004
ZiX_sqr	99045038
myshiftic	135828272
mygprecrc	215183847
mydbllog2i	226450182
dbllog2	302687868

Generated by: LCOV version 1.16